Feeling helpless

Sharp pain in pelvic area since I came back from a long car ride. I couldnt barely walk or stand , it subsided but now it's a very intense throbbing and a sharp pain every time a move. I have pelvic pain for years . I go back and forth to the doctor with no clue on what's causing these pain. I'm just feeling really hopeless right now. I take medicine to try to relieve it but it seems to never work. I just want to cry right now .