So I'm 17 I had unprotected sex round about 23rd of augest 2012 I've been feeling verry tired I was due on my period 1st of September I'm still not on my boobs have got blue vains around them and my boobs have gotten bigger I have a weir taste in my mouth and have been needing a wee all the time what could be wrong with me could I be pregnant? I took too tests both came back negative what's happening? Please get back to me soon x