I am a little confused by my period this month. Everything seemed normal up until the end. I had a very regular 5 day flow, nothing unusual. Then for 2 days I had light pink spotting and my boobs have been incredibly sore. This is not normal for me. Generally my period has ran its course completely by day 5, and I never get sore breast this far into it. Now we did have unprotected sex during my period, could that have something to do with the extended spotting? I know it's incredibly unlikely that I conceived during my period, but if I did, would that be a sign?