Can: Ipil cause irregularity in periods for more than one month? I always have regular period cycle. I took ipill on 14/11/2015 after condom broke during sex. My expected periods was on 18/11//2015 but taking ipill delayed my periods to 23/11/2015. (I did not have any intercourse after 14/11. I also took pregnancy test today - Negative result) But I did not get my period yet this month. Is this a side effect of ipill? How long will my periods be delayed? How long should I wait before taking another pregnancy test?