Go to Content Go to Navigation Go to Navigation Go to Site Search Homepage

I got on the shot I am almost 2 weeks late for my period and my breasts are a little tender. Are These just side effects of my birth control, or could I be pregnant?

The shot (brand name Depo-Provera) is one of the most effective forms of birth control — it’s up to 99.7 percent effective when used correctly.

Irregular bleeding is the most common side effect for women using the shot. Periods become fewer and lighter for most women, and often stop altogether. Some women also experience sore breasts as a side effect of the shot.

Getting a period each month can be reassuring to a woman who doesn’t wish to be pregnant. A woman who misses periods because she’s on the shot might worry about pregnancy, but it’s very unlikely that a woman would become pregnant while on the shot.

Tags: birth control, depo, the shot

Explore more on

Planned Parenthood cares about your data privacy. We and our third-party vendors use cookies and other tools to collect, store, monitor, and analyze information about your interaction with our site to improve performance, analyze your use of our sites and assist in our marketing efforts. You may opt out of the use of these cookies and other tools at any time by visiting Cookie Settings. By clicking “Allow All Cookies” you consent to our collection and use of such data, and our Terms of Use. For more information, see our Privacy Notice.

Cookie Settings

Planned Parenthood cares about your data privacy. We and our third-party vendors, use cookies, pixels, and other tracking technologies to collect, store, monitor, and process certain information about you when you access and use our services, read our emails, or otherwise engage with us. The information collected might relate to you, your preferences, or your device. We use that information to make the site work, analyze performance and traffic on our website, to provide a more personalized web experience, and assist in our marketing efforts. We also share information with our social media, advertising, and analytics partners. You can change your default settings according to your preference. You cannot opt-out of required cookies when utilizing our site; this includes necessary cookies that help our site to function (such as remembering your cookie preference settings). For more information, please see our Privacy Notice.

Marketing

On

We use online advertising to promote our mission and help constituents find our services. Marketing pixels help us measure the success of our campaigns.

Performance

On

We use qualitative data to learn about your user experience and improve our products and services.