The guy I was seeing and I had an oops. The condom broke on us. That day I was ovulating. I took the plan b 50 hours after having sex. I weigh 205 pounds. I heard it doesn't work for people over 165 and that are ovulating. It's been two weeks since I took it. The last few days I've been nauseated lightheaded and extremely tired. Are these side effects or am I pregnant? Taking a pregnancy when I get paid.