Dear Baby, Before the semen ejaculation, there is a pre-ejaculation liquid (precum) which is ejected unknowingly. Precum does conatin some sperms which are capable of fertilizing woman s egg. The ipill emergency contraceptive is best effective if taken within 72 hours of intercourse. You were late by few hours, so you will have to keep your fingers crossed about its efficacy. Moreover, after ipill, period may be delayed by few days. The progesterone in ipill does cause nausea, breast heaviness and intestinal irregularities. In pregnancy, the nipples become darker, not lighter. It is likely that you may not be pregnant. The other symptoms of early pregnancy; i.e. frequency of urination, breast engorgement with tenderness and secretions appear about a week after missing the period. Now best option for you is to get your urine pregnancy test done. If it is positive, you may opt for termination of pregnancy by medical methods by Obstetrician s help. I hope you have got the guidance.