I took plan b about two weeks ago when the condom broke. My boyfriend did not cum inside of me but we were worried because it was my ovulation day. I have had pms symptoms for about a week now and today started what looks like a really light period, or maybe even just spotting. I don’t know if I should be concerned about pregnancy if it is implantation cramps or not. I am supposed to get my period in 4 days however I know plan b can alter your cycle.