I'm on the pill and I know my period is suppose to start on a Wednesday thru Saturday. It started on Wednesday and then went away Thursday and I kept spotting and I would use a tampon but then it'd go away and it never really came back. I am sexually active but we haven't had any accidents where we believe we could be pregnant even though we don't use protection and haven't for about two years now but I am on the pill and I've never had a problem like this before. Does anybody know what it could be? I'm really worried about it but I don't want to take a pregnancy test unless it's absolutely necessary....