I used Oral Plan b after a condom break with my partner. The medication was easy to use and seemed to be very effective, since I did not become pregnant. Although I am very satisfied with it\'s effectiveness the side effects were a big problem for me. I experienced nausea, and headaches. The pills also changed my menstrual cycle and I spotted for several days after my cycle was done. I am also having problems with lower abdominal pain, and it has been almost a month since i have taken the pill.