Within the past 2 months or so, I've had PROTECTED sex with my boyfriend about 3 times. Awhile ago I had a very watery and light pink discharge for over a week, but then I got my period for about 4 days, although it wasn't as heavy as it usually is. More recently we had sex again, and I just had a super dark discharge, now lightening up to brownish..with traces of blood, but it's not time for my period yet. I'm only 16 and I was wondering if this is just irregularities teenagers go through or if it's pregnancy [although no other symptoms..and completely protected]? Or if it could be some sort of infection.. I don't know, help?