I had this same thing!! Please, if you can, go see a chiropractor. Ask him/her to check your "pubic symphysis". It's the joint at the front of your pelvis, and during pregnancy it is normal for it to come apart a little, but with mine I couldn't walk at all, it hurt SO bad. My chiropractor said it was the worst case of pubic symphysis dislocation that he'd seen in a pregnant woman, and an adjustment fixed it.
I kno how yu feel I had the same pain my hip would pop all the time especially rolling over in bed n walking I have to walk like n old lady it hurt so bad
Maybe a belly belt to help support the weight during the day? Otherwise there's not much you can do but staying off your feet.