Please help!! I'm 17 years old and I am not sexually active. On September 29th I woke up 3 am to use the bathroom during my period. I got that feeling like my bladder wasn't completely empty except this time there was burning. I went to bed and felt fine until the weekend. That's when the constant burning began. I went to get tested for a uti they did a culture and it came back negative. I went to the gyn who did a Pap test and that came back negative also. Then I went to my doctor who said it might be pelvis siatica. We went to see another doctor who said he doesn't think it has to do with a pinched nerve or any back issues. They told me to take ibuprofen and heat my back but that didn't help. Then the pain slowly went away. I felt great for a week and I thought it was over but it came back when my period started. It's been off an on for a month now. I'm so depressed and I feel like I can't truly enjoy myself. The pain isn't as bad as it was when it first started but the constant burning is still there. I used to feel it in my right buttock and thigh but I don't anymore. I was thinking maybe something is irritating my vagina so I bought a different brand of maxi pads and I'm going to start hand washing my underwear without milder detergent. Does anyone know what this might be and how I can get rid of it??? I'm so tired and I want my life to go back to normal.