Hi,
Thanks for posting in HCM.
I understand your concern.
You are right that sperms can stay alive inside the female genital tract for about 48 to 72 hours.
But, use of birth control pills generally offers protection against
pregnancy up to 99%. Hence, you need not be worried about pregnancy at this point of time if you are regularly taking the pills as directed.
Diarrhea what you are having could be the side effect of the drug. But, it could have been also caused due to infection as well.
Kindly take medication for infection in the form of Tablet.
Secnidazole Forte 2 tablets stat and see for the response. Drink good quantity of fluids to keep yourself well hydrated.
In case the diarrhea continues, then it might be caused due to side effect of the pills. For this, you need to consult Gynecologist and review your mode birth control and adopt to the one which would suit you.
Hope the information provided would be helpful.
All the best.