So there is a spot near my pelvic bone that hurts like hell its been hurting since I got pregnant…

So there is a spot near my pelvic bone that hurts like hell its been hurting since I got pregnant everytime they would rub the ultrasound wand on it it would hurt like hell! So now that I'm not pregnant I feel it even more it's like a very sharp dull pain! Like the pain you get when you don't drink enough water but I'm definitely drinking a ton of water but it hurts so bad that I when I move or get up it stops me from moving anymore and I try and rub it out has me in tears it's so bad what could I be?