My last period was on May 21-28. On June 4th I had unprotected sex. On the 8th I noticed a bit of pink when I went to the bathroom. Then later that day I noticed some odorless light brown discharge. I've noticed this just about every time I go to the bathroom in the 4 days after that, including today. Could this be implantation bleeding? I have irregular periods, so it's kind of hard to calculate if I was ovulating around the time I had sex. I know all I can really do is wait to see if my period comes or wait until I can take a pregnancy test, but I was just wondering if anyone else has experienced this or what anyone thinks. Thank you.