I took overal l oral contraceptive for 4 days (25th feb - 1st march) 2 times daily to delay my periods. had unprotected sx on 28th feb & 1st mrch suppose 2 gt periods on 2nd mrch but gt on 7thmrch heavy periods bleeded for 4 days. cn i be pregnant?

Any time one has unprotected sex there is always at least a small possibility of pregnancy, however, if your periods are regular, the dates of intercourse would likely be after your normal ovulation time, & the contraceptive pills could well have decreased the chance of conception even more. Delayed period was likely related to use of pills. Sexually transmitted infections are also possible tho