emergency contraception
"So I took Ella one just before 48 hours of unprotected sex, my period was due on the 25th, which was about 2+ weeks later on, so I waited, but when the 25th came, no period, naturally was very very panicked, and after a few days there was still nothing, took a pregnancy test and the first one didn't work, which again was worrying, but the second one came back that I wasn't pregnant, which was a big relief! Just come on my period now, which is the 30th. Honestly, try not to worry too much and stay calm, it's more than likely that this has worked!"