Lumps in my sides

Kara

I am 27 weeks and two days pregnant. I went for an ultrasound yesterday and the baby is measuring 2lbs and 6 ounces and everything was good. Tonight while stretching I noticed I could feel lumps on both of my sides that are moveable. They don’t hurt or anything but I’m just wondering if anyone else has felt this or know what this is? It’s on both of my sides and when I lean over I can feel them more. I don’t think its the baby because I don’t think he’s that big yet to where he is in both of my sides. I’m just wondering if its just muscle that has stretched or something? It’s hard to describe what I feel in google so here I am lol. Thank you!