i'm 17, and i have been having unprotected sex with my boyfriend for about 2 years. (i know it's stupid) i usually have my period around the same time every month, but it has been late a few times. its now december 24, and my last period started around the 5th of november. in the beginning of this month my breasts were sore, and swollen which always happens right before i start my period, i also had cramps like i usually do right before i start, so i assumed i would. a couple weeks went by and i didn't start, but then when i would go to the bathroom, i was spotting brown stuff. at first it seemed like a lot, so i thought it was my period, but my periods have never started off brown, they do usually end with a little bit. but then the next day there was nothing. and on and off for about 10 days, i spotted just brown. i've had sharp pains in my abdomen, and cramps almost all month. this kind of thing has never happend to me before. i went to the doctors and they took a urine test to see if i was pregnant, and it came back negative, so they told me it might be too early to tell, and to come back in a couple weeks, i just want to know whats going on, if this sounds like i'm pregnant, or if somethings wrong..can someone pleasee help??