Constant feeling

That I have to POOP! Been having regular bowel movements and I have a constant need to sit on the toilet and try to poop. It feels AWFUL, like when I’m not sitting on the toilet it hurts constantly and I did go get checked and not having contractions or anything but midwife said it does sound like baby’s moving into that low position to come out. They won’t check my cervix because they don’t want to risk starting labor. Does anyone else have any experience with this? And any advice on how to get relief?