I got my most recent period on the 22nd of December. On the 27th (after it was over), I had sex and the condom broke . . . I'm not on birth control, so I took Plan B the next morning. The night of January 1st my period came back. It's the 3rd now and I'm still bleeding. My period is usually very regular. I don't remember anything like this ever happening before . . . can anyone tell me if this is a known side effect of Plan B? Any insight would be greatly appreciated!