I missed one pill this month but took it the next morning (I usually take it at around 7 at night). I have been taking my birth control pills regularly ever since. I've reached my inactive pills, however, and am 3 days into the pills with no period. I did notice some very light pink spotting. Could this be implantation bleeding and when am I supposed to expect my period during these inactive pills? First time BC user, thanks a bunch!