I'm 18 years old and my last period was on aug.26.2007 since then I been late in my period we are in oct.9.2007 and I'm still late in my period.. but my period is irregular but I know there's a possibility I might be pregnant me and my boyfriend had unprotected sex a few times... I went out today for a walk I come home I go to the bathroom I see brown discharge in my underwear look like creamy brown discharge not a lot just a little no cramps or nothing I'm really worried don't know what to do? Could I be pregnant? I have no pregnancy symptoms but just headaches heartburn tired at times and constipation... PLEASE SOMEONE ANSWER ME BACK AS SOON AS POSSIBLE I'M SO WORRIED RIGHT NOW!

Sounds like you are about to start your period. This brown discharge is normal. It is called old blood and usually precedes a period.