Me and this girl had unprotected sex and I busted inside. The next day, 9 hours after she took the pill. The next day, she threw up and took another dose of the pill. I'm worried because I've read weight could make plan b one step less effective? Btw when she took the second pill more than 24 hours had passed since the first pill so she didn't have to take the second one right? I also heard taking plan b twice in a month can make the chances of pregnancy higher? Anything will help!