I took a plan B on 10/6 after having sex earlier that same day. I have taken a Plan B before and ended bleeding 5 days later as a side effect. This time I didn’t bleed at all or anything. My next period is actually supposed to start today and my breasts/nipples have been tender basically all week, they still are and I did have some emotional mood swings. Is it safe to say the Plan B worked? My period is now 2 days late....I’m just experiencing regular pms??