We had first intercourse on may 5 only one day then get next period on may 15,not sure its period or other.but may 15 to may 20 got period.after that no intercourse on may .then missed period on june and july but june 8 onwards we had again intercourse on continue many days. And june 29 pregnancy show negative on urine and blood test at hospital. But july 28 pregnancy show positive and ultrasounds show 7 week 2 day.then when did actually get pregnant. Is it may 5 intercourse help to become pregnant. Due on march 13 .pls help me when did I actually get pregnant. Is it any chance for may 5 intercourse to become pregnant