"had unprotected sex during my most fertile time and i know for a fact it was around the time i was ovulating, my periods have always been regular and i can tell by my symptoms..and i keep track on my fertility app. so since i am not on birth control, i took plan b the next day about 14 hours after sex. didn&#039;t experience too bad of symptoms,just my usual pms symptoms. my boobs were pretty sore and swollen, slight nausea, and mood swings, biggest side effect i got was fatigue. also this pill made my cervical mucus thicker. i had no spotting. these symptoms lasted for the full 2 weeks until my period came which it came on time just 1 day early. my period was a lot heavier than usual and had pretty bad cramping, but this pill worked!"