That could be pressure from the baby. I'm almost 35 weeks and have the same thing.
I'll be 35 weeks tomorrow and just started feeling similar things.
Ur baby could be breech n it's kickin u down there which I can say it's pretty painful
no she's not breech, Doctor confirmed she's head down.
Most likely it's her head moving around down there and pushing on a nerve. Mine does it all the time and it's totally normal! It is uncomfortable at times though