Period, Implantation or something else?

So my period was due Sunday, but I had spotting start very early morning Friday... I'm still spotting - but really not even spotting in a pad... I have blood from my vagina whenever I have a bowel movement, but only when I wipe, not in the toilet or anything nor any other time. Sunday I bled the most, but only 1/4th of a pad... nothing even remotely close to my regular nor light periods. And of course I had blood when we had sex, but nothing like I did during a regular period. I had no clots, no cramps, no constant flow. What was or is this?