I just started taking Mononessa about a month ago. 6 weeks after the birth of my son. I love him so much, but I am dead set on not having another baby. At least not for a while. I take my pill every day, but sometimes I'm a few hours late. So my question is how late is too late? I know it depends on what week you are in. For example, I took my pill 3 hours late yesterday and it was only the second one of a new pack. So was 3 hours too late for it to be effective anymore? Also, can I get pregnant on my period?