I had unprotected sex with my boyfriend last month while I was on my period...and he came on the outer part of my vagina...I was kinda scared but I got my period on time...but I had my period about 2 days ago...on tuesday..but it ended today (thursday) and I'm not sure if its my period or not...could I be pregnant or something?

can someone help me out with this ASAP...I'm kinda worried...