I'm 16 and I get my period once every 6-12 months. I've spoken to my doctor about it and they just said it's nothing to worry about, I did have a blood test that said I had raised testosterone. Recently after masturbation (I don't insert anything just rub and I'm a virgin) I've found that I start to bleed afterwards, I've not spoken to my doctor about this because I find it all very embarrassing so please help and tell me if this is normal or if this is something that needs checked out. Also, side note if this has any correlation to this at all, my nipples have started becoming more sensitive to the point that a light pinch makes them hurt.