Bleeding after Plan B: When it's regular and when it's an early being pregnant signal

  • Bleeding after Plan B is regular — it may very well be recognizing or an indication of an early interval.
  • You may additionally expertise signs like breast tenderness, dizziness, nausea, and headache.
  • However it may very well be implantation bleeding if it happens 10-14 days after you’ve got final ovulated.

Plan B, additionally known as the morning-after capsule, stops you from getting pregnant by interfering together with your menstrual cycle. This implies you may discover irregular bleeding after taking the capsule.

Whereas some sudden bleeding is regular, recognizing may also be an indication of implantation, one of many early levels of being pregnant.

This is tips on how to interpret your post-Plan B bleeding to find out if Plan B labored, or not.

Does Plan B make you bleed?

Bleeding can begin any time after taking Plan B — some individuals begin bleeding as early as eight hours after.

“It is not uncommon for there to be sudden or atypical bleeding after taking Plan B,” says Felice Gersh, MD, the medical director of the Integrative Medical Group of Irvine. The explanation plan B may cause some bleeding has to do with the way it works.

Plan B works to stop being pregnant by stopping or delaying ovulation. It does this by supplying an artificial model of progesterone, a hormone your physique naturally makes, says Abigail Cutler, MD, a professor of obstetrics and gynecology on the College of Wisconsin.

It needs to be taken as quickly as potential after having unprotected intercourse, and inside 120 hours. You may take Plan B at any level in your menstrual cycle. 

Having excessive ranges of progesterone from Plan B can set off your physique to shed the liner of your uterus. When this lining is expelled out of your vagina, it exhibits up as recognizing or bleeding.

“This transformation in hormone ranges can be the rationale that some individuals expertise a change within the anticipated timing of their interval following Plan B,” Cutler says.

Plan B can set off your interval to come back early, so bleeding or recognizing could also be an indication that it is working, Gersh says.

In response to a 2006 examine of people that took Plan B:

  • 21% of individuals obtained their interval two or extra days early
  • 24% of individuals obtained their interval two or extra days late
  • About 15% of individuals had recognizing earlier than their interval, which lasted a median of two and a half days

You may inform the distinction between recognizing and your interval as a result of recognizing tends to be shorter and far lighter than your common bleeding.

Most individuals ought to anticipate their interval inside three weeks of taking Plan B, Cutler says. “If you do not get a interval inside 3 weeks, it is a good suggestion to take a house being pregnant take a look at to ensure the capsule labored,” says Cutler.

Plan B bleeding vs. implantation bleeding

Implantation bleeding happens when a fertilized egg attaches to the wall of your uterus — that is sometimes the primary stage of being pregnant, that means Plan B did not work. 

Plan B spotting and Implantation bleeding Venn Diagram

Alyssa Powell/Insider

There are a couple of methods to inform the distinction between recognizing, implantation bleeding, and your interval:


Your interval might also come early in the event you take Plan B. The menstrual blood needs to be much like your common interval, however it could be darker and stickier than common. 

For those who assume you’ll have implantation bleeding, it’s best to wait at the very least three days from the beginning of bleeding to take a being pregnant take a look at. This can give your physique time to construct up being pregnant hormones and offer you an correct consequence.

Different unwanted effects of Plan B

Along with bleeding, Plan B may cause different unwanted effects, together with:

  • Nausea, vomiting, or diarrhea
  • Decrease stomach ache or cramps
  • Feeling dizzy
  • Fatigue
  • Headache
  • Tenderness in your breasts

The most typical unwanted effects of Plan B are nausea and cramping, whereas vomiting and diarrhea are rarer.

When to see a health care provider

In uncommon circumstances, bleeding after taking Plan B generally is a signal of one thing extra critical, particularly if it comes with different signs like extreme stomach ache.

Usually, bleeding after Plan B should not final for much longer than every week, so extended bleeding generally is a signal of an issue like an ectopic being pregnant or might result in a harmful quantity of blood loss.

It is also regarding in case your bleeding is just too heavy, that means it’s a must to change your pad or tampon at the very least each two hours for longer than a day, Gersh says. 

For those who’re having any of those signs after taking Plan B, it is best to see your gynecologist to ensure there is not a extra critical difficulty.

Different signs that ought to elevate an alarm embrace:

  • Sudden or extreme stomach ache
  • Itching and a rash
  • Vomiting inside two hours of taking the capsule 

Additionally, if any of the conventional unwanted effects like nausea or cramping final greater than a day or really feel extreme to you, it is best to get medical consideration, Gersh says.

Insider’s takeaway

It is regular to expertise bleeding after taking Plan B, particularly in the event you get your interval early or simply have mild recognizing. It is also regular to have delicate unwanted effects, corresponding to nausea or cramps. 

But when your signs really feel extreme or your bleeding would not cease after every week, it is best to achieve out to your physician to test if there’s a extra critical difficulty.