I'm always careful and she's just laying on it and it is folded in half by the way because I want her to be comfortable

I'm sure you're right next to her watching but please be careful with all the blankets she's sleeping with. That makes me SO nervous! The sleep sacks are PERFECT at this age and can be found super cheap. I am NOT tryin to hassle you in ANY way mama, you do you girl. I just wanted to leave my unsolicited opinion! Lol

It's pretty normal for her to be sleepy after shots. Really, with her age Idk how you'd know she's sleeping more because that's kinda all they do at that age anyway. She SHOULDN'T be hurting really really badly, if she is.. you need to take her back cause that's not normal. Slightly stiff or achy/sore, sure, but it shouldn't be anything more than that. A nice warm bath, massage her legs and by tomorrow all should be well mama.