It is possible to get pregnant if you have intercourse on the 2nd of the following month after your period on the 16th, because it is near the ovulation period, and the possibility of getting pregnant is relatively high. For women who have regular periods, the normal menstrual cycle is about 28 days, ovulation is usually in the middle of the two periods, in the 2 days before and after ovulation, the chances of pregnancy are greater when you have sex. Therefore, if you have your period on the 16th and have intercourse on the 2nd of the following month, it is very likely that you are pregnant, and you need to take a test to find out if you are pregnant. Women can determine whether they are pregnant through pregnancy tests, blood tests, ultrasound and other methods, and it is recommended to go to the hospital for the most accurate results.