SOS PLEASE READ

Samantha
Hi I'm not looking into getting pregnant so I'm freaking out just a little bit! My period have been regular since April starting in the exact same day. In the beginning of September I had unprotected sex the day before I was supposed to start. I did start and only had my period for 3 days.  A week later I had sex everyday for 5 days, some days without a condom. Now a week later, (two weeks from my period) I have light brown discharge. I've been having a huge appetite and very emotional. Can anybody help me out please as to why I have these symptoms?