Hi. I am a 19 year old girl from sweden and I have a problem with my genital area. My period is late again. Now it's been gone for 3 months and before that it's been late a couple of times. It always comes back, but when... i never know. I also have "fluids" that smells and i don't know what to do. I have tested my self for chlamydia but it was negative. Am I sterile? Can I have some sort of other sexually transmitted disease? Should my period be so irregular? Please help.