What am I feeling ?

F

So I’m going to be 35 weeks and I was wondering if anyone has felt this ? But I noticed now I’m just watching tv and I I feel my baby move and some parts of my belly get super hard like on the top or towards the left or right from my belly . It feels like it’s either his butt or his back ? Is that possible to feel ? Like it gets super hard then I feel some cramping I get mild pain . Before when I use to feel my baby move it didn’t hurt before ?