Hello doctors, had a very irregular period last month started on 23 jan and ended on 27 jan with lighter flow and then again started on 1 feb and ended on 12 feb with heavier flow . On 28feb just touched vagina with no penetration or ejaculation but took ipill for safer side in 16 hrs . Its been 7th march no periods or bleeding of any type and since last month's bleeding was heavier when should be the expected date of period for march? What are the chances of pregnancy?