Implant (Nexplanon)

While the Paragard and hormonal methods that don’t contain estrogen—the shot, the Mirena IUD, the implant and the mini-pill—are safe for people who are postpartum to use immediately after giving birth, combination pills, which contain estrogen, shouldn’t be used until three weeks after giving birth, since estrogen can increase a postpartum person’s risk of blood clots.

No, most forms of birth control are not effective immediately, so you want to check with you doctor before having unprotected sex. Until then, use a condom for added protection.

Some methods are much easier to hide than others. The shot and the implant are invisible, so nobody will know you’re using birth control. The IUD is also very discrete, so that’s another possibility, though some guys may be able to feel the strings during sex. And if you are looking for a permanent solution, sterilization surgery is also undetectable, but there may be age restrictions and waiting periods for this procedure.

If you’re under the influence of alcohol—or anything else—a birth control method that doesn’t require action right when you’re about to get your freak on may be your safest bet. Fortunately, there are plenty of options. Note: These methods will cover you against pregnancy, but you should pair them with a condom for STI protection.

And speaking of covering all your bases, here are some tips for safer, smarter hookups.

The implant is effective right away if you get it during the first 5 days of your period. Otherwise use a back-up method for the first 7 days after you get it inserted.

The implant is extremely effective at preventing pregnancy—as in over 99% effective.

In other words:

Fewer than 1 in 100 women will experience an accidental pregnancy during the first year of using the implant.