I had unprotected sex on May 29, 2013 and again June 6, 2013 on June 11, 2013 I got brown discharge followed by some blood but not a lot. The next day it completely stopped and I didn't have anything. The 13th the brown came back and so did a little blood, it's not enough to wear a tampon so I have to use a pad. The color is a bright red not dark like normal period blood. My periods are irregular but when I do get them, I am always heavy the first coupe days. My period lasts 7 days. What I'm experiencing now is confusing me. It's too light to be my period. This has never happened to me before. What is going on? I read something saying it could be implantation but I just don't know.

You had sex... thus its possible you are pregnant... it is however still too soon to test. I would wait a few more weeks then take a test.

Thank you.