Hi Doctor, my girlfriend took the unwanted 72 pill an hour after our condom broke. She got her last period on 6th May and usually has a 31+ days fluctuating cycle. We had sex on 12th June (she hadn't gotten her period yet) and took the pill on the same day. She hasn't gotten a period since then and the home pregnancy test taken on 15th June came negative. What could it possibly be? She was already quiet late on her period but has never missed a period before.