Possible spotting, HELP

I had my period Jan. 2-7. On January  16 I hooked up with a guy after a night at the bar. I'm pretty sure we didn't have sex but he did finger me. The next day I had a little blood when I wipped then had brown discharge for the following 4 days. I'm supposed to get my period feb. 4. Today I had very little light brown discharge when I wipped. My breasts have been a little sensitive for the past 2-3 days. I don't know if I'm just paranoid or if something is wrong or possibly pregnant. Any advice or input would be greatly appreciated. Or is this discharge normal?PLEASE HELP