My period is very irregular. I get it probably 2 months in a row then miss it for as many as 5. I may even have PCOS. So on April 11 I started my period and then on the 23, my boyfriend and I had protected sex. (It was around 3 am so technically the 24). However the condom broke so around 11:30 am we bought Plan B and I took it. I'm very worried because I don't want to be pregnant. Are my chances high of being pregnant right now? Also, I don't know when I ovulate and according to other people, it's usually around day 10-14 and so I had sex the 13/14.