(Y/N) is released from the medbay five days later, on the day Wheeljack starts his heat cycle. He tries all day not to frag his girl, who's still recovering, but by night, he's had enough. (Y/N) tells him to go ahead and don't bother with the condoms. Things go from a little adult fun to trying to get pregnant, and it's not exactly a secret...
Warning: sexual content
(Y/N)'s P.O.V.
It's been three days; I feel a little better, but I still feel like Megatron beat me up. I'm still on oxygen, but Ratchet says a venturi mask with a blue cap is much better than a non-rebreather. He doesn't think I'll do fine with a nasal cannula yet. I am too weak to do anything. I think Wheeljack likes this cause he gets to feed me — or Ratchet. It's better than a feeding tube but still embarrassing. I tell Wheeljack to go to our room and get a proper recharge...
Until I wake up at two in the morning; so used to seeing Wheeljack around that I feel scared, and my throat is dry.
"Wheeljack!" I try to call out.
Optimus Prime's P.O.V.
Returning from delivering supplies to the town, I hear (Y/N) crying.
I didn't think Wheeljack wouldn't be in the room when I walk in. Is that why she's crying?
"What's wrong?"
"Water, my throat is dry."
I activate my holoform and get water from the sink
"Thank you," (Y/N) says and drinks the water as I sit on the bed, "I'm sorry I caused much trouble, and for everyone to be worried," she says after drinking a little water.
"You know you had everyone worried. You should have said something, while Magnus would not have been pleased; I would have told him the mission is off for a few days."
"I thought I would feel better after taking medication. I did, but not for the entire duration of the mission."
"You know I put the health and safety of everything first. You had Wheeljack thinking you were dying; he neglected himself not to leave your side — and apparently won't recharge all night while you're in here."
I see Wheeljack and Ratchet standing by the door.
"You're still doing two A.M. checks?" Wheeljack asks Ratchet.
"She's still getting oxygen support; I need to make sure she's not getting worse," he explains before activating his holoform, washing his hands, and getting what he needs. Wheeljack watched, still worried as three days ago.
"Another day or two, and you should be able to leave the medbay," Ratchet says when he's done.
"Let's go, Wheeljack, back to bed," I tell the still worried wrecker.
Wheeljack's P.O.V.
It's another two days before (Y/N) can leave medbay and rest in our room. I don't know how often Ratchet had to say it's normal to slowly decrease how much oxygen (Y/N) is getting, especially with how sick she was.
I struggle not to be so clingy as my girl rests and telling her how scared I was that I'd lose her. Secretly, my damn heat cycle started. I'm not going to ask Ratchet, but I'm certain she's in no condition for fragging. It's a rough day, and by the time everyone is in bed, I can't take it anymore. I want to rip her clothes off and pound her.
(Y/N)'s P.O.V.
I swear Wheeljack has been acting odd, and I don't think this is the happiness I'm out of the medbay. I don't think anything of it until I see he's in his underwear as we kiss, and he's dry humping me. I feel his spike is ready before I look into his eyes. Ah, that explains it; he started his heat cycle.
"You should have said something," I tell him, "I don't think a little fun would ruin my recovery."
He unbuttons my shirt and rubs my breasts while still dry humping.
"Are you sure? You're still recovering—."
"Didn't I say yes already?"
He smiles and takes my clothes off before kissing me all over my body.
"You remember I said if we frag when I'm in heat, there's a higher chance you'll get pregnant?" He asks.
I know we have condoms in the nightstand, but I think it's time we start a family.
"This is an odd way to talk about it, but yeah, I'm ready to have a baby with you."
I didn't think he'd go o right in, but I'm used to him going right to pounding.
Meanwhile...
Optimus Prime's P.O.V.
"...I told her she should have said something, and we —."
Well, this is awkward, walking by their room hearing them do it.
Ratchet shakes his helm, "I knew they'd do it. I could smell Wheeljack started his heat cycle. It won't surprise me if she's back in the medbay in three weeks."
He goes into his room.
A sparkling around the base would be fun, even if what humans call terrible twos is amplified with Wheeljack's wrecker attitude.
"...faster, Wheeljack!"
I need to get away from here.
Wheeljack's P.O.V.
I said gentle, but I want my girl to get pregnant, and she asked me to go faster; I must please my lady. Her moaning makes me want to go faster until her breasts are bouncing around. I pull out once I feel the cum enter her.
"I'm sorry, I said gentle," I apologize as I hold (Y/N) close.
"I said to go faster. It's on both of us," I watch her rub her belly, "shame it'll be three weeks before we find out if there's a little wrecker coming. Maybe sooner, but we'd have to pay close attention to my body... or you know what? I wonder if you guys can smell that kind of hormonal changes?"
"We should be able to."
"Well then, I think we'll know in a week."
I kiss (Y/N) before insisting we go to sleep.
"You are supposed to be resting."
She smiles before closing her eyes.