I have had no period at all other than 1 very faint spotting when I wiped. ( sorry!) I am now 7 days late and I feel like I've been some cramping sensatiobs for a week now. Period are only 2 days to three at the most and light . I've been taking birth control but the week I had sec was the week of placebo pills on top of amoxicillin do plan b. what are my chances??? I got pregnant 3 years ago tge day after my period ...