If you miss or take any pills late, you may spot or bleed and should use a back-up method until you start the next pack of pills. If you are late with a pill by 4 hours or more, be sure to use a back-up method until you start the next pack of pills.

Can missing 3 days of birth control cause bleeding?

If you missed 3 pills in a row, you are going to bleed — just consider this your period placebo days. Start a new pack of pills right away. Make sure to use back-up contraception, such as condoms, for 7 days.

What to do if you miss a birth control pill and started bleeding?

If you have missed three or more pills, you can: Begin a new pack of pills the following Sunday (after missing the pills), even if you have started bleeding. You should continue to use an additional birth control method for the first 14 days of the new pack of pills.