Even though the Depo Provera shot is meant to prevent pregnancy, there still is a chance you could become pregnant while on the shot. Here are some of the possible ways that the Depo shot may fail: The first shot was not given within the first 5 days of a normal period and you have had intercourse before the shot (meaning you were already pregnant at the time the shot was administered). Oct 04, 2018 · Depo-Provera® is a female hormonal method of birth control. It's very effective in preventing pregnancy. Depo-Provera® contains a synthetic (man-made) form of the hormone progesterone, called depo medroxyprogesterone acetate (DMPA). The Depo-Provera® injection gives 3 months protection against pregnancy. You should get one injection every 3 months (13 weeks) to get the best protection ... Oct 31, 2002 · depo-provera is used for abortion, study confirms depo-provera is used for abortion, study confirms news by lifesitenews.com US lesbian soccer star Rapinoe defies new Olympic rules banning… If a woman receives a Depo-Provera injection early in pregnancy, it does not seem to significantly increase the risk for birth defects. However, some research has indicated that this drug may be linked to abnormal development of the baby's genitals. Oct 17, 2008 · Can Depo-Provera terminate pregnancy? ... If you wish to terminate a pregnancy, do it the most responsible way with a doctor's help and an abortion. Otherwise, simply have the child. Oct 17, 2008 · Can Depo-Provera terminate pregnancy? ... If you wish to terminate a pregnancy, do it the most responsible way with a doctor's help and an abortion. Otherwise, simply have the child. As long as you want to prevent pregnancy, you need to receive an injection every 90 days. This is because, after 90 days, the levels of Depo-Provera are not high enough for most women to reliably prevent pregnancy. Let’s say you want to get pregnant and you discontinue injections.