Late for your Depo shot?

The Depo shot is scheduled every 13 weeks (about 3 months), and the CDC's U.S. Selected Practice Recommendations build in a grace period of two extra weeks. That means you can get your next injection any time up to 15 weeks after the last one and still be re-dosed without needing a backup method — your protection is considered to have held. If it's been more than 15 weeks, you're past the grace window: you can still restart the shot, but your provider will first make sure you're not pregnant, you'll need to use condoms or abstain for 7 days after the injection, and emergency contraception is worth considering if you've had unprotected sex. The single most useful thing to know is that being a few days or a week late is usually completely fine — the grace period exists precisely because life happens.

You haven't done anything you can't fix, but the approach changes. Because your last dose is likely wearing off, protection can no longer be assumed, so three things apply. First, your provider will confirm you're not already pregnant before giving the injection — often that's just a quick check or a urine pregnancy test. Second, once you get the shot, you use a backup method such as condoms (or abstain from sex) for 7 days while the medication builds back up to a protective level. Third, if you've had sex without a backup method since the grace window closed, emergency contraception may still help if it was recent, and a pregnancy test is a sensible step. None of this is a reason to skip the shot — restarting Depo is exactly what your clinician expects, and they'll walk you through the timing.

No. That's the whole point of the grace period. As long as it has been 15 weeks or less since your last injection, the CDC guidance says you can receive your next shot without needing any additional contraceptive protection — no 7-day condom window, no gap in coverage. So if you're two, five, or even twelve days late but still under 15 weeks, get your shot when you can and carry on as normal. It's only once you cross the 15-week line that the backup-for-7-days rule and the pregnancy check come into play. This tool shows you your exact 15-week boundary date so you know which side of it you're on.

Within the 13-to-15-week grace window, protection is considered to be holding, so the risk stays very low. Past 15 weeks, the medication is wearing off and pregnancy becomes possible — that's why the guidance shifts to ruling out pregnancy, using a backup method for 7 days after the next shot, and considering emergency contraception. If you're overdue and have had unprotected sex, don't guess: take a home pregnancy test (they're accurate about 3 weeks after unprotected sex, or roughly a week after a missed expected period) and talk to a provider. Being late once does not mean you're pregnant, and it does not mean the method has failed for good — it just means the timing math has changed and it's worth checking.

It can, and this is normal and expected rather than a sign of harm. After the last Depo injection, the return of regular ovulation is often delayed — on average around 10 months from the final shot, and for some people up to about 18 months — regardless of how long they used it. Fertility does return; it just tends to take longer than after stopping the pill or removing an IUD or implant. If you're thinking about pregnancy in the next year or so, that lag is worth factoring into your timing, and it's a good reason to talk with your provider about whether a different method fits your plans better.

Yes. This checker runs entirely in your browser — the date you enter is used for the math on your own device and is never sent to a server, saved to any account, or shared. If you tick "remember this date," it's stored only in this browser's local storage so it's here next time; the "Delete my saved date" button erases it instantly, and clearing your browser data does the same. Leave the box unticked and nothing is stored at all. It's general educational information based on published CDC guidance; it can't prescribe or give you the actual injection — only a clinician does that.