Birth control question

So i started birth control for the first time ever on the first day of my period which was on 17.02.I always take my birth control at 9 am exactly i even take picture of me taking it to be sure😂However,my gyno has told me that if i have diarrhea earlier than 12 hours after taking the pill it doesn’t count and i should take one more.Two days ago,normally i woke up,took my pill at 9 am but at 8pm i had to poop,it wasn’t diarrheaa it was normal pooping but now i am kinda scared that my pill won’t count and it is like i missed it.Should i worry?When should i poop?