I'm 15 days in my cycle, the most dangerous time as I'd most probably ovulated my partner came inside me (condom broke) I took the pill 12 hrs after but I've been reading that the pill does not work once the pregnancy has started (the egg has been fertilised an made it to the uterus) but does it prevent the sperm reaching the egg and stop the fertilising process or is that out of the pills area of work. I have not had any pain or side effects from the pill either which is worrying as it's been 24 hrs, and help is good help.