Yes, you can get pregnant on the Depo-Provera shot, although the chances are slim. The Depo-Provera shot is a highly effective method of birth control that has an approximate success rate of 99 percent.
Even the best kinds of birth control can fail, and approximately 3 in 1,000 women will become pregnant while using the Depo-Provera shot for contraception. This hormonal pill works to prevent ovulation and to make the cervix and uterine lining hostile to any kind of sperm or fertilization. Progesterone is used in the Depo-Provera shot, and it is given approximately every 12 weeks. As long as this is done on time, the chance of becoming pregnant is incredibly low.