Right off the bat, I'd like to say I am NOT pregnant. I'm seventeen and a virgin. However, I haven't had my period since June 20 and the other day I noticed a yellowish substance on my nipple, which looked alot like colostrum.

I am going to talk to my doctor about this, but I'd just like to know if anyone else has had this before and what it means. All Google enquiries give me results about pregnancy, and are no help.

help me PLEASE!