"i had unprotected sex on feb 1, 2015 around 4pm. my periods have been irregular and at this time i haven&#039;t had my period in 3 months. the next day, i took the next choice one dose pill at 5:30pm. (i took a pregnancy test before taking the next choice one dose pill and the test was negative.) that week (2nd-7th), i experienced pain in my lower back, painful cramps, dizziness and headaches. on feb 8, i got my period! it started off very heavy and got lighter at the end. during my period i experienced the regular period symptoms and pms. the period lasted for 5 days. i recommend this medication because it is cheap and it works!"