Someone help please

Has anyone ever ended up pregnant after using a condom, taking birth control (but doubling up more than one day) and then taking plan b within the 72 hour limit? Honestly I took 2 within a week pretty much (I know it’s a big dose of hormones) my period was supposed to come May 15th but ended up coming May 18th. I had sex in may 12th and ended up taking plan b on the 14th. Now a week before my period I was bleeding not super heavy but enough and it had some small clots in it. I took a test and thought I saw another line coming up but it ended up being negative. I’m 4 days away from my period but I’m freaking out and so confused. ):