Note – I don't own Harry Potter or Twilight. When I first started my fanfic Tainted Blood, the project was supposed to flow into multiple story lines where each was it's own alternate universe, but after the fifteenth chapter I found I couldn't remember which world was which, so I'm going back and writing each world one at a time. I don't even know if I'll be able to get to the other worlds.

Tainted Blood – Chapter 1: Experiment

I'd never thought about my gender. I always felt comfortable about myself; it honestly helped to have a mother who was accepting of me being who I was. Her greatest fault was that she loved me too much and that she would sacrifice anything to keep me alive. Thinking back she started looking out for me when it came to my father. The man never should have been a father. When I was three mother left on a trip for two weeks. Upon arriving home she found me in soiled diapers and under fed. She decided to leave him then.

She raised me as a single parent and gave me advice on crushes when I started drooling over the opposite sex. She decided to explain to me about the birds and the bees at a young age and how my body worked, but never how the opposite sexes body would end up working. All I needed to know was that sex meant babies. At age eight I got my heart broken for the first time. I dug myself into my studies as well as playing on the basketball court and other playing fields. Mother dug into this with the same gusto as explaining birds and bees. Not only am I a top student I am a wonderful player.

My team ended up winning game after game. Finally we traveled to the United Kingdom to play against other teams from other countries. At the age of eleven my life soared and I couldn't ask for anything more. As I shot off the winning shot I felt my chest suddenly hurt and I found myself crashing to the ground. I didn't realize when I woke up that my life would be turning upside down and that my perfect life would in fact become a nightmare.

By the way... I didn't mention my name. It is William Mario Higginbotham, my mother having changed my last name when she divorced my father. She calls me Bill for short, born September 13, 1979.

~o0o~

Renee watched as her son tore across the court, bouncing ball after ball through the net. Ever since she left her husband she tried giving Bill everything. In the long run she found herself knowing she would give her own life for her son. Taking a deep breath she watched as Bill pushed off a shot towards the net and the ball rung around the hoop. Nobody watched the ball go in and instead their attention drew to Bill clutching a hand to his chest before collapsing to the ground.

The woman stood up watching as the defibrillators were brought onto the court, her son's basketball jersey ripped away. A hand reached to her mouth as they tried to resuscitate the boy and she watched as the child's back arched. She watched as the stretchers were brought and they lifted the boy up onto the stretcher and she followed them onto the ambulance. The men pumped at the boy's chest, but the heart beat simply wouldn't come back.

Arriving at the hospital she felt herself choking when they pronounced her son brain dead. A man tapped her on the shoulder. "Ms. Higginbotham... there is a way to save your son."

"He's dead."

"There is still a way to save him... a special procedure. It has though... consequences."

The woman looked up. "I don't care. I just want my baby back. My own life... I'd give my own life."

"We need to transfer you and your son to our facility. Is this all right? Is it all right that you both don't go back to the lives you had?"

Renee nodded her head, her entire body feeling numb. "It is fine. It's all fine. So long as I have my baby. What's this treatment called?"

"Veela blood." Things were a blur then and the next thing she knew her son and she were transferred to a facility in order to proceed in the cure. They took her son to a room that was sterile with a metal slab and lifted him up onto the metal slab. She watched as they pulled away the jersey, then proceeded to pull of his shoes and socks. Then off went the shorts and underwear so that the boy was naked in front of everyone. Then came the items keeping her sons body alive. The man pulled out a syringe and pumped the dark liquid into the boy's arm.

The boy at first didn't breath on his own. Then the body gasped and a hand clasped to her mouth and she smiled. Bill lay there, only to suddenly whimper in pain, his back arching like it had on the court. She gasped, her hands going to her mouth yet again as she watched her child's male parts change to female parts. When it was over she hurried over, her head crashing to the child's chest. Despite the fact Bill's lower parts changed the child's chest remained flat. She couldn't help but sob.

"You said you wanted your child to be saved, that you would give anything."

"Yes... but."

"We need to dress your daughter."

"Why? Did you know this would happen?"

"No. We didn't know this would happen as this is our first time testing the cure."

"Testing..." Renee swallowed. "You... so you don't know what else will this do to my so.. child?"

"We don't know?"

"Why my child!"

"Your child is a wizard... well, witch. She is also Muggleborn. There are less restrictions. This said, our cure is going to have to be tossed."

"How are you going to remedy this?"

"I'm sorry Ms. Higginbotham... but we can't. Be glad your child no longer has her heart defect." The man waved his hand. "Transport the girl and her mother to the new home we've prepared for her. Burn all of the male clothing and go out and buy the girl some actual female clothing."

Renee felt herself pulled away as her child was wrapped in a blanket and carried away.

~o0o~

Bill felt a pain in his chest and blacked out only to end up in a dream state. "Hello? Where am I? Is this heaven?" The boy blinked a couple of times and saw himself in a waiting room at a doctor's office. Looking into the mirror he saw that he was now an adult instead of an eleven year old kid. A doctor without a face came to the door and snapped his gloves. "Come on now Bill, we need to see you in the examining room and lie down on the table."

The boy sighed and stepped into the room and lay down on the table. He watched as the doctor reached to remove the shirt, unbuttoning it as he did so. "Hey!" Bill tried pulling his limbs to stop the man, but found that his limbs were now tied down to a metal table. The pain in his chest intensified, almost as if he was getting zapped by electricity. His flat chest changed shape as did his muscular waste to something more hourglass shaped. A whimper escaped his lips. He watched as the man removed the shorts and underwear. The lower part remained the same. "What do you want with me?"

The restraints were gone and Bill suddenly felt himself scooped up into the man's arms. He saw the man through a wedding veil and despite the fact his body was still in the half-male, half-female state and otherwise naked the man was carrying him out of a church chapel and the usual fanfare could be heard. "I want you to have my baby."

"I'm male... I can't have babies!" Bill snapped. The man set him down onto a bed. The man switched to his mother and Bill shrunk in size.

"Bill... you're such a cute little baby. You'll always be my little boy. Let me change your diaper, you cute little thing."

Bill opened his mouth to say something, but only the gurgling sound of a baby could be heard. Two eyes blinked and took in the location "he" was in. His body felt weird and his head spun. "Bill" blinked a couple of times, remembering the nightmare about being female. "His" hands reached up to touch "his" chest and "he" was revealed to find it was the same shape as always. Despite feeling funny down there it was obvious "he" was wearing boxers.

Renee was in the corner, a pale look on her face as if she was mentally broken. "I'm sorry darling. It was the only way to save you. They wanted to toss out all your things, but I managed to convince them you needed at least one set of underwear until they brought you your new clothes."

"Bill" frowned, not at all sure what "his" mother was getting at. "He" found himself wiggling a bit, the funny feeling down there not going away. Going to the bathroom was obviously needed. "I'm going to the bathroom." Renee chocked back a sob, but the child proceeded to the bathroom attached to the room. The toilet seat lifted up and "Bill" dropped the boxers. Instead of successfully making the bucket she found herself crapping on the floor. "Mom!"

The girl hurried back to the room, only to find that her legs didn't move the way that they used to and she tripped. Renee rocked back and forth. "I'm sorry... you're not my little boy anymore."

"Mom!" The child felt tears fall down her cheeks, her knees and palms scrapped up from the fall. "Why? Why me?" The door opened as she said this.

"The treatment they gave you to bring you back to life turned you into a girl." A man's voice fell upon the child's ears, causing "Bill" to turn her head to look at the man with fear in her eyes. "Your name is not William Mario Higginbotham anymore, it is Isabella Marie Cullen. In other words your not a Bill, but a Bella now."

Bella felt her chest seize up and tried diving under the bed, only to find her foot grabbed by the man. "I don't want to be raped! Please!"

"Raped?" The man pulled her backwards and scooped her up around the waist before dumping her on the bed and pinning her arms above her head. "I've no interest in a pubescent girl under normal circumstances. I want to see if this body of yours which was once male can bear children. No... you're giving off the vibe that your body is in heat, and yet you're human. I felt this sudden urge to mate with you ever since I saw your gorgeous nude body prone on my metal slab at the lab." A wicked smile spread across the man's face. "Actually... you're just an experiment. I can fuck you all I want."

Bella felt tears run down her cheeks. As the man had scooped her up she felt an unsettling feeling in her stomach area. When he pinned her onto her back so she was forced to look him in the eyes, something in her mind or her body reacted strangely, as if there were two people there.

"I don't want to be raped," as he said he had no interest in pubescent girls, but another voice that was wild and feral screamed that she wanted it. "No... I can't want to make babies. I don't want to see if it can because I am male, not female."

"Oh girlie... you're female now and your body is screaming out your sexual desire for the opposite sex."

"Come on! I'm AM attracted to the opposite sex. I'm male."

"You can't deny that the urge to mate is there with you as well. These changes to your body are causing your hormonal drive to go nuts. You want to lock lips and body with his own."

"I'm not an experiment!"

It was then that a loud thump was heard and the man fell forward on top of Bella and she began to sob. "Mom..."

"It's all right." The female voice wasn't her mother. No, Renee was still in the corner whimpering. "Get this guy out of here." The man was hauled up off the girl while her entire body shook. The door clicked and the girl looked at the female. The girl must have died her hair and her eyes must have had contacts as they were a violet color. "My name is Tonks."

Bella's eyes drifted down to the female's chest and found herself mentally drooling, the other voice taking over. The woman sat in front of her, smiling at her in an attempt to calm her. Bella's mind couldn't focus though and she pushed forward, attempting to crush her lips against this Tonk persons. She could feel her arousal growing in her belly. "First kiss... is awesome."

Tonks pushed her away. "Hey, what are you doing?"

The woman's surprise caused Bella to attempt to lock lips with the woman again and tried to her to push her down. Bella's hand's reached down and began to unbutton the female's pants as well. She felt herself pushed away. Tonk's pulled back her fist and clocked Bella one, causing the girl to black out.