okay ladies I'm 29+2 weeks pregnant and here lately when i have a BM (poop) iv been experiencing horrible sharp shooting…

okay ladies I'm 29+2 weeks pregnant and here lately when i have a BM (poop) iv been experiencing horrible sharp shooting pains up inside me..its not hard to poop and I'm not constipated but as soon as it comes out these pains shoot up and I'm overwhelmed...but iv also had really bad ligament pains in my side for the past two weeks...could this be a different form of ligament pain or something else. has anyone experienced this??