I'm on microlite 21 day pill followed by 7 day break. mistook it late on day 6 (24hours late) I missed it completely on day 13, 19, 20 and 21. I had unprotected sex days 3, 5, 7, 8, 9, 20 and 24.  What are the chances of me being pregnant. I did a hpyesterday and it was negative. I had an extremely irregular period for an hour a day with very little. Please help!!