Could I be pregnant after this ?

So this might be a little TMI.. sorry ladies,

So today is the 48 hour mark and I took a plan B.

Little did I know I had diarrhea with in the hour.

I didn’t think much of it, because I had a few prunes last night so figured it was that.

I was running late to work this morning so I left and I went about my day. But coming home and while sitting in traffic I started thinking... how fast does a plan B dissolve into my system?

Could I have possibly pooed the pill out?

Can anyone answer this for me? I mean, could I get pregnant because of this?