Here's the deal. Just before my last period was meant to happen (3 weeks ago), I screwed up my birth control pills. I skipped 2 days and took 2 on the sunday night before my period was due to make up for it. During that time I also stopped taking anti-depresssants (i have since started up again). Lo and behold, no period to speak of. This is the first time i've never gotten it. I took a pregnancy test and it was negative, but i'm not sure I gave it long enough to give me the real results. I've also had to go to the bathroom much more frequently and urgently despite the fact i'm not drinking any more than usual. I also have had a slight backache, and last night a big headache. If I don't get my period next week, that will be the second period i've missed. What do you think? Could I be, or is my cycle just screwed up from going off anti-depressants?