The timing of ovulation is not certain after taking the pill during ovulation.
For most women, taking birth control pills after having sex during ovulation may not affect menstruation and ovulation, and the next menstruation will come normally, and the time of ovulation will not change, remaining about 14 days before the next menstruation.
However, as the main components of the pill are estrogen and progesterone, some women will experience delayed menstruation due to changes in hormone levels in the body after taking the pill, and the time of ovulation will change. It is difficult to confirm the time of ovulation due to the difference in the body constitution of each individual.
Therefore, when a woman takes the pill during the ovulation period, the time of ovulation again cannot be confirmed, and it is recommended to use ovulation test paper to do the test in order to clarify the time of ovulation.