Intense pain. Be the possible cause?

I am 22 years and unmarried. From 4 years I get pain little above the vaginal area or around the urethra . Sometimes the pain is in left side and sometimes in right or middle. Feels like muscle or nerve twisting or shooting pain which increases when I move. If I am sitting in specific position and try to move the pain increases. It comes and goes. Doesn't have any pattern and nor do it relates to menstrual cycle. All the ultrasounds, ct lower pelvis, mri pelvis are normal. Can't get the diagnosis why does it happen. Is it something real or only in my mind? Have consulted many gynacs also Either doctor doesn't understand my symptoms or I am unable to clearly explain. Which doctor should I consult. What might be the possible cause?