I had sex with my bf on the last day of my period. We are usually very careful but the condom broke and we are unsure if any semen went inside of my vagina. Immediately took morning after pill 3 hours after sex. I have a normal 28 days cycle for my usual period but after one week after the pill, i have my period again? It lasted 2 to 3 days with normal blood. It doesnt seem like spotting but the flow isnt very heavy too. Does that mean the pill has worked?