emergency contraception
"I had unprotected sex without realising it was the day that I was ovulating and took the pill within 17 hours. I experienced horrible stomach cramps, nausea and lower back pain but no period for 8 days and started to get really worried! I was convinced I was pregnant and kept looking at forums for information on pregnancy symptoms and implementation bleeding. Luckily on the 9th day I was very relieved to see I had started my period and I was having sleepless nights for nothing. It's an excruciatingly long wait but it's worth it so just hang in there. It definitely works, it may just take a while!"