I don’t think I have high chances of pregnancy right


I’ve been taking my combination pills correctly and rn I’m on my third pack.. I got diarrhea for less than 24 hours one of the days. When I got it it was 4 hours later of when I usually take the pill and by the time I had to take my next pill (next day) I didn’t have anymore diarrhea. 5 days later I had sex and my bf cummed in me one time I believe. Should I be worried about pregnancy?