so my bf & i had unprotected sex maybe 2-3 days before my period started. & he pulled out a couple minutes before he came. & then  the next couple days we used condoms. now it's been about 2 weeks, i haven't spotted or anything & i just finished my period on Tuesday. i just have been having a lot of discharge, it literally looks like milk. could i be pregnant??? or could it be my vagina cleaning itself???