(Y/N) and Bumblebee are on their honeymoon and want to start a family. They find out (Y/N) is pregnant with twins, but it's not all happiness.
Bumblebee's P.O.V.
I never thought I'd have a human as a sparkmate, but here we are on what humans call a honeymoon. (Y/N) knows everything about us — which at the moment feels embarrassing since I've just started my damn heat cycle. Even though I've been told it's normal to frag during the honeymoon, I still don't like this. I try my best to wait until (Y/N) wants to do it.
I didn't think she'd bring up having a sparkling already. Though we've known each other for a while before dating. She argues this isn't rushing since we've known each other for years. I'm in the mood now, but I'll wait until tonight after our dinner date to get her in the mood.
I can smell (Y/N) is thinking about what we'll do after dinner as we get ready. Good, I can skip the foreplay; it's been hard not to pound (Y/N) all day, both because of my heat cycle and because I want to get her pregnant.
Even though I smell (Y/N) wants to do it, I will not jump right to pushing her on the bed. She wants to look at the view on the balcony. I try to wait awhile before trying to make a movie, but (Y/N) beats me to it and kisses me. We don't break the kiss as I have her walk backward into the room and by the bed. She knows what I want to do, and we take each other's clothes off. I lay her on the bed and get on top of her.
"How long have you been ready?" She laughs.
I go right in and feel she's ready.
It's a fun night, and we keep trying to get her pregnant every night during the honeymoon.
(Y/N)'s P.O.V.
It was a fun honeymoon, but the fun is over the day after returning to the base. Bumblebee has a mission that'll last a couple of weeks.
"I'm sorry, babe."
"It's ok; it's your job."
We kiss before he leaves with Bulkhead, Magnus, and Wheeljack.
Everything is fine the first week without Bee, having fun with the kids and Smokescreen. It's the second week when I get sick, throwing up and feeling tired, but with no fever. Two days pass before I realize.
"Ratchet?" I ask as I walk into the medbay.
Ratchet looks at me and hums, "I don't feel good, and I don't think it's a cold."
I feel embarrassed already, but I know Bumblebee will want Ratchet to take care of the baby and me during the pregnancy.
Ratchet does a standard physical and records the results.
"This is going to be odd, but June told me to ask," Ratchet starts, clearly uncomfortable, "when was your last period?"
"Um... before the wedding... and I'm late."
"I'll do a blood test."
Ratchet explains Cybertronian technology allows him to know the results within ten minutes.
"Bee will be happy—."
"I don't need to know what you two did during the honeymoon!"
I walk out of the medbay, laughing.
I'm glad a friend has pregnancy tests, and I can surprise Bee. I'm only three weeks along and not showing.
I surprise Bumblebee with the pregnancy test, waiting for him on the bed when he gets back.
"I can't believe we're going to be parents!"
The next month is rough in terms of morning sickness. We joke we're having twins, but this isn't a way to know.
Bumblebee is excited about our appointment to see if there are really twins coming.
Sure enough, I'm pregnant with twins. We're excited, and Optimus tells Bee he's relieved of duty until the babies are born. I don't argue that Bee can go on missions for the next twenty-four weeks, but Bee is excited to be with me more...
Until he watches me throw up more than I have been, and all I want to do is sleep. Bumblebee tried not to bother Ratchet, but that didn't last long.
"It's normal, Bee, add there are twins in there," Ratchet explains and tells me to make sure I'm drinking plenty.
Bee tries his best to take care of me.
By nine weeks, I'm over this scrap; but there's still at least three weeks of this awful morning sickness.
Optimus Prime's P.O.V.
I don't like how sick pregnancy is making (Y/N), even if it's normal. Bumblebee is trying not to panic, but he worries this is not normal. I walk down the hall, watching (Y/N) walk towards me, but she falls to the floor.
"(Y/N)!" I tell and activate my holoform.
She is limp and won't wake up, scrap. I rush her to the medbay as Arcee gets Bee.
Ratchet is worried as I rush in with (Y/N). I lay her on the bed, and Ratchet scans her before activating his holoform.
"Dehydration, which we both know isn't good period-."
"but with her being pregnant..."
"(Y/N)!" Bumblebee yells as he runs in, horrified at what he's seeing.
I rush to get him to sit on a chair before he passes out.
"She's ok; just dehydrated," I explain.
"How is that ok? and my kids?"
We watch Ratchet work on getting IV fluids for (Y/N) before checking the twins. Bumblebee struggles to relax seeing Ratchet get the ultrasound machine rather than the Fetal Doppler.
"They are ok," he says, "sorry too soon to know what she's having."
Bumblebee's P.O.V.
I thought I just lost my family, but still (Y/N) being dehydrated isn't good for the babies. I hope this doesn't cause an issue with their development. I worry how (Y/N) is only nine weeks along. What the hell are we going to do as they get bigger and need more from her?