I am a seventeen-year-old female that is experiencing a sharp pain from my belly button straight down through my "pee hole" (the actual term escapes me at the moment). It is on and off, but it is frequent when I lay down. It hurts enough so that if it lasted continuously I wouldn't be able to function. I think it might be a UTI because I've been diagnosed with such before and never experienced pain or redness while peeing. (The only reason they tested me for it was because I was experiencing a similar discomfort, but not quite as sharp) I am peeing normally, no redness, no pain.