Pelvic Pain

I have had a persistent pain on my left, low pelvic area, and in the area where my pelvis and my leg connect (the flexor area), down my inner thigh, through the pubic area, and down my inner thigh.   I also have some low back pain.  I have had this condition for 5 months now.  The pain is persistent, sometimes more severe than others, but always painful.  The area between my pelvis and my left leg feels like it is very tight and I get a pinching sensation in my groin area, around my inner thigh.  This area in my inner thigh also becomes swollen sometimes and I get a shooting pain radiating from this area down my inner thigh.  Please give me some guidance, I am in a lot of pain and very frustrated.

I had a CT scan of my pelvis and the doctors did not find anything. I also did an MRI of my pelvic area and my left leg and they did not find anything.  Someone told me my MRI did not cover my inner thigh area.  I also had a laparoscopy and my reproductive organs are perfect.  Please help.