my boyfriend and I were having sex for the 3rd time in the same day and we used condoms both times but during the third time the condom broke. we didn't realize till he pulled out but he hadn't cummed yet just pre cum. as soon as we realized we stopped and went to the chemist and got the morning after pill which i took straight away. its now 3 days later and your suppose to get your period within 5 but i haven't got it yet. could i be pregnant? what should i do?