Doctor looked at me like I'm crazy...

Caleigh
I'm 37 weeks and 5 days pregnant.. I had my 37 week appointment a few days ago, I told my dr how I've been feeling very very sore down in the area where you would get cramps .. And he looked at me like I'm crazy... It hurts to walk, stand up, get up, move a certain way... I have no idea what it is and he said "it's your muscles" .. This is my body and I really, really don't feel as if it's just my muscles .. But I'm also not a doctor I have no idea what it could be .. But it's progressively getting worse . Does anyone else feel like this ?? And actually have answeres to what it is ???