Pulled Muscle??

I'm 8 weeks and I was laying on my stomach on the floor, propped up on my arms and it felt like I had pulled a muscle on both sides or done a bunch of crunches, not a cramp or sharp pain, more of a muscle ache.  It doesn't hurt when I don't do that (my mom would say "well then, just don't do that!" Lol) I did have quite a bit to eat today at a birthday party I threw.  I'm not bleeding or anything, just wondering if anyone else has experienced this??  I'm new 😊