Okay so I had sex with my boyfriend and after we had finished he realized the condom broke. I've been on Errin the birth control pill for about 3 months now. And only time I got my period while on the pill was the first week I started taking it. Anyways I take errin somewhat irregularly. Like most days I take it at 4, but there are some days I take it around 2:30 and others when I forget until later so I take it around 8. I know that's bad. What is the risk of me getting pregnant? Should I go buy plan B and take that? Or just wait it out to see what happens?