On late Saturday and early morning Sunday, I had unprotected sex. I have been on birth control for four months and Saturday was my week free of the pills. The guy used the pull out method and I understand it's not 100% safe. Considering that night I had lost my virginity, I lost a lot of blood and by a lot, I mean like, I would consider it like a heavy flow period. Every month I get my period on Tuesday but Monday afternoon I took a morning after pill. Tuesday midnight I went to the bathroom and I had bright red blood like period blood but throughout the whole week there was nothing except Wednesday at midnight. Recently I've been getting brown vaginal discharge, ever since Thursday after taking the next pack of birth control. What is it? I am scared of being pregnant as I cannot afford that.