Birth control vaccine side effects The vaccines do not contain contraceptive vaccines or any other substance which interferes with fertility or pregnancy and their labelling accurately. 1 The long list includes things that could never be caused by the vaccine, like spider bites and shouting. 2 The challenges in the development and application of vaccine-based wildlife contraceptives are diverse and include differences in efficacy. 3 PBMCs from Gambian infants vaccinated with BCG at birth produced higher levels of IFN-γ, IL-5 and IL in response to hepatitis B surface. 4 The birth control shot (sometimes called Depo-Provera, the Depo shot, or DMPA) contains the hormone progestin. Progestin stops you from getting pregnant by preventing ovulation. When there’s no egg in the tube, pregnancy can’t happen. It also works by making cervical mucus thicker. 5 Other possible side effects include: Nausea Weight gain Headaches Sore breasts Depression Slight bruising where you got the shot A small, permanent dent in the skin where you got the shot (this is very rare) Negative Depo shot effects usually go away after months, once your body gets used to the hormones in the shot. 6 Here are a few potential side effects to be aware of if you use it. 1. You might stop having periods. The most common side effect of the shot is a change in a woman’s bleeding pattern, Jason. 7 For some people, the most convenient form of birth control may be one that is easy to use, has no bothersome side effects or does not disrupt the sexual experience. For others, convenience means no prescription is required. When choosing a method of birth control, consider how willing you are to plan ahead or follow a rigid medication schedule. 8 Blood clots linked to birth control primarily affect the legs (called deep vein thrombosis), but in some rare instances, they can affect the lungs (pulmonary embolism). Vaccine-connected. 9 Effect on birth control Safety Blood clots Fertility Menstruation Takeaway To date, there are no adverse links between COVID vaccines and hormonal birth control use. Some media outlets. 10