My period is due on the 26th, but usually it's at least 2-3 days late. Yesterday, however, I started bleeding a teeny tiny little bit. At first, my discharge was tinted brown (which happens quite often before I get my period) and then there were a few drops of blood. Today there were a few drops of blood, but otherwise it's just been brownish discharge. When I took plan B at the beginning of the month, I spotted for 3 days, but the second day was EXTREMELY heavy- heavier than my regular period by far.
So, my question is, could what I'm experiencing right now be my period that's just really light because of the super heavy spotting earlier in the month? Or could it be implantation bleeding? I'm really scared because we did have unprotected sex right around when I should have been ovulating. If my period doesn't end up getting heavier/actually coming, should I go get tested for pregnancy? How long should I wait? Or is abnormality to be expected after taking plan B?