Can you still get pregnant on the pill?
Without contraception, most women who are sexually active on a regular basis get pregnant within one year. Your chances of getting pregnant depend on the time of your cycle. On your most fertile days, your risk of getting pregnant after having sex once is up to 25%. During other times of the cycle it can be very low.
The contraceptive pill contains hormones, which act on your body in three ways. The pill thickens the mucus at the entrance to the womb, with the result that sperm can’t enter the womb. It also changes the lining of your womb, which makes it difficult for a fertilised egg to implant. With the exception of some minipills
, contraceptive pills also stop ovulation, which means that you won’t be releasing any fertile eggs.
Clinical trials have shown that out of 100 women who take the pill for one year, less than one will get pregnant. The pill is over 99% effective, which makes it slightly safer than the condom (98% effective). When the pill fails, it is usually because of a missed dose or other mishap.