hi doc,i and my bf did not had intercourse but we have doubt that the prejeculation liquid might have gone inside the vagina.though i had the i pill 72 by the end of 24 hours i still have doubts on pregnancy.i am feeling like vomiting since the day i took i pill.how long will it last as it is already 4 days since i took the pill.Also as i have taken the pill for the first time what are the side effects that can occur.please reply immediately.