"took ella one 90 hours after unprotected sex, he withdrew but i was still thinking i should take something, took with food, no sickness, but for weeks, felt lower back pain , and lower pelvic pain, cramps, and tender breasts. also acid reflux occasionally which i never get. then of course my period did not come, of course i started panicking and googling everything under the sun. today negative pregnancy test, got period 3 hours later ..lol... this pill works it just makes your period late. i would use it again."