I took plan B Saturday morning a few hours after having sex (he didn't finish so I took it as a precaution in case there were sperm hanging around from earlier when we were fooling around). Today I am cramping a bit (no where near as bad as when I get my period) and noticed bleeding is starting. Is this a good sign that I'm in the clear and it worked?? Never taken it before so I'm not fimiliar with the typical affects and time periods