What is going on?

Alyssa
I'm 30w2d, I was just at the doctor tester day and everything looked fine. The baby has been moving normally, and she seems to be okay. But, my stomach is so sore and tight, it's a constant pain...discomfort. I really don't feel right, my shoulders hurt and I think one of my ribs are dislocated, it pops and hurts every time I take a breath. I also had loose stool last night. Has anyone else experienced this?