hi ! it would depend how many years you have been on it. 2 it would also depend what part of your cycle you were on. 3 and you would need to take in consideration that it takes 3 days for male sperm to reach an egg if one was there. so you would need to think about the above and if you miss your next period then would be the time to take a hpt or see your doctor. do hope this helps. good luck
if i stopped taking birth control after having unprotected sex could i get pregnant?