Plan B

Just wondering what have been everyone’s experiences with taking the plan B 💊.i took it for the very time in life and now I think I made a mistake . I took it on the 21 had just finished my period two days prior had unprotected z3x on the 20th. And after taking the Plan B. I had some mild cramping like every other day and one day I mildly spotted it. This past sunday the 27 I had heavy spotting but now I’m just everyday all day bleeding hard core like with heavy bleeding and big clots. Is normal to experience? I know I should probably ask doctor. But my gynecologist is 1:30 mins away. So I’m just trying to get some input before I schedule since I would go on my own with two toddlers 😬.