Hi, I Am Having Pain In My Pelvis Area. It

Hi, I am having pain in my pelvis area. It feeling like fullness. It is very hard to explain. I have been to my family doctor, a gynecologist, and a urologist, none has been able to help me. I feel like there is no help for me. I've been dealing with this for 7 or more months. They are treating me as though I have a bacteria infection. I've been on antibiotic several weeks. I am taking doxdcycline, Estrace, ciprofloxacin, uribel, and probiotic. I am very weak and my knee feels weak. The hurting in right below my belly button.