I am 20 years old, and on Friday July 1st I was brought to the hospital after having pains in the right side of my stomach. They started near my belly button then moved around my stomach. While at the hospital I had a blood test, and an ultrasound done to check for appendicitis. And everything came back normal. For the last five days I have been having pains in my back, kidneys, right side, right side abdominal pain, pain near my belly button, pelvic pain, pain right next to my hip bone, headaches, and nausea. I'm still able to pass gas, and eat, walk and jump without pain, and when my stomach is pushed on there is no pain. I have been to the doctor multiple times for pains like these, I seem to get them each month. The ER doctors seem to think I have endometriosis, and my gyno put me on birth control but I'm still in pain. Each month I have burning urination and rectal bleeding while menstruating. Today, I was eating lunch, and all of a sudden I got pain in the right side of my abdomen, and my entire body felt warm, and I started running a very slight fever (99.2) and when I was just walking I got a pulling feeling from my belly button down to my vagina. So my question is, is this appendicitis, or is this endometriosis? My anxiety is out of control. Could appendicitis take this long to develop? I am on Loestrin 24 (birth control) and my fever has gone away.The pain and nausea comes and goes. I've been going through this for about a year now. Please help me. :(