Spotting on birth control – what does it mean?

Maddie Braidwood - The Lowdown

by Maddie Braidwood · Oct 30, 2020

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Reviewed by Dr Becky Mawson on Oct 7, 2021

Get the lowdown on what spotting is, what to look out for and when to see your doctor.

Spotting on birth control is a common experience – so firstly, don’t worry!

In this post we share all on what spotting is, what to look out for and when to see your doctor.

What is spotting?

Spotting is any bleeding (no matter how light or heavy – this includes light brown discharge or period like bleeding) you may experience between your regular menstrual periods. Doctors may refer to this as intermenstrual bleeding or as breakthrough bleeding if you are using contraception.

We need to be aware of our bodies and pay close attention to any changes in normal bleeding patterns from month to month. Spotting can be normal when using contraception and certain factors, for example smoking, increase the risk of experiencing breakthrough bleeding. However there are some instances where you should get it checked out by a doctor. 

Luckily for us, contraception can often help to control irregular bleeding and if you want to know which birth control methods are best to avoid spotting, when you should be concerned about spotting and when to see a doctor – then keep reading!

How long does spotting last on birth control?

Spotting on birth control, also known as breakthrough bleeding, typically occurs in the first six months of taking a new contraceptive. When starting a new method it can take time to regulate the menstrual cycle as the body needs to adjust to the new hormones. This can cause you to experience some spotting between periods. With most methods of birth control this settles down after a few months but may persist for some contraception users.

What can cause spotting on birth control?

It is thought that an increase in progestogen leads to changes in the lining of the uterus, called the endometrium. Progestogen may thin the endometrial lining, which can cause some bleeding. A thinner lining helps prevent pregnancy as a fertilised egg cannot implant into the womb lining. 

Other potential causes of spotting while on the pill are:

  • Forgetting to take a pill for a day or more
  • Infection – sexually transmitted infections can lead to irritation and inflammation of the uterus or cervix
  • Taking a new medication – some drugs can interfere with the effectiveness of birth control pills. You should always check with your doctor before taking a new medication
  • Vomiting or diarrhoea
  • Pregnancy – spotting while on birth control doesn’t always mean you’re pregnant, however pregnant women can experience implantation bleeding or spotting as a result of the implantation of a fertilised egg in the lining of the uterus.

What types of birth control are most likely to cause spotting?

Hormonal methods containing only progestogen are the most likely to cause spotting. These include:

Although all of these listed can cause breakthrough bleeding, not everyone will experience spotting. 

The copper coil does not contain hormones but may cause spotting especially in the first few months after fitting. 

Combined hormonal contraception containing oestrogen and progestogen (the combined pill, patch or ring) may cause spotting in the first few months of use. However this usually settles and users of these methods will then normally only experience bleeding when they choose to have a break of up to 7 days between packs. This is known as a ‘withdrawal bleed’.

When should you be concerned about spotting?

Spotting is normal when changing contraception, however if it is still occurring after six months, or is new after you’ve been on your contraception for a while, then this could mean an underlying issue. 

These could include:

  • STI’s, such as chlamydia and gonorrhea
  • Pelvic inflammatory disease (PID)
  • Cervical ectropion (a fragile area on cervix often made worsen by contraceptive pill)
  • Changes to the cervix which might lead onto cancer
  • Injury to the vagina, for example with sex
  • Vaginal dryness which might be due to hormonal changes
  • Pregnancy or pregnancy loss

How to stop spotting on birth control 

  • Ensuring you’re taking the pill at a similar time every day to help maintain consistent hormone levels in your body. Using apps and trying to get into a routine can help this.
  • Continuing to take your contraceptive pill regularly even if spotting does occur. If you’ve been taking the pill for less than six months, your body may not have had enough time to adjust fully 
  • Checking any other medications to ensure that they do not interfere with the effectiveness of the pill 
  • If spotting is related to the implant and is problematic after 3 to 6 months then it is worth talking to your GP, practice nurse or local contraception clinic about adding in other medication to help
  • If you think vomiting or diarrhoea may be affecting your ability to absorb the pill, speak to your doctor about this

How to manage spotting

Deciding whether or not you should use a tampon or pad depends on how light or heavy the bleeding is and which you prefer to use. 

With any spotting it is worth getting a self taken sexual health screen which you can access via your GP, sexual health clinic or online. This checks for chlamydia and gonorrhea which are common causes of spotting in younger women. Also, make sure you have had your cervical cancer screening if you are over 25.

When to see a doctor…

Like any medication, some people can use their contraception with no complications, however others may experience problems. You should speak to your doctor if any of the following occur:

  • Persistent bleeding on a contraceptive method after 6 months of use
  • New bleeding or spotting or a change in bleeding pattern after you’ve been on your contraception for a while
  • Bleeding regularly after sex
  • Blood and discharge especially if there is an offensive smell
  • Spotting and new change in sexual partner as this can mean a sexually transmitted infection
  • Heavy bleeding, meaning soaking a pad or tampon hourly for more than two hours
  • If you have other symptoms or are worried!

If you are still spotting after taking the pill or starting a new method of contraception for six months, speak to your doctor. They may suggest changing to another form of contraception, for example with higher oestrogen or one with a different progestogen formulation.

Talk to one of our friendly doctors about contraception

  1. Jo’s Cervical Cancer Trust. Cervical screening results. 

Maddie is an English Language and Linguistics graduate who is passionate about writing. She writes fun and informative content on the weird and wonderful sides of contraception!