Hi there, i have a question. On january 5th, i started my period. It was a normal period for me, lasted about 4 or 5 days. Then, on January 17th, i had unprotected sex with my boyfriend. The next day, i bought Plan- B and took it. within 24 hours of having sex. Yesterday, the 25th, i started my period again. Is this normal? Could i be pregnant? Or is this just nothing and I'm over thinking. I'd appreciate the help because I'm kind of freaking out over this.