5 possible reasons why you're spotting between periods.

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Even if you’ve experienced it for years, the sight of blood marks in your undies generally isn’t a welcome one — especially when you know for sure they’re not a result of your period.

Spotting between periods, also known as breakthrough bleeding, is relatively common, particularly in women between the ages of 20 and 40.

However, it can signal a number of underlying causes — here are five of them.

1. You could be pregnant

When you visit your GP with concerns of spotting, the first thing they will do is rule out the possibility of pregnancy.

“It could be a normal or ectopic pregnancy and this needs to be excluded in any woman presenting with spotting, regardless of whether she is using contraception or not,” says Dr Dasha Fielder from Sydney’s Sapphire Medical Practice.

RELATED: 4 ways women can fall pregnant while using the Pill.

A pregnancy test from a urine sample can quickly identify or rule this out as a cause.

2. You may have an STI

Bleeding between periods could be a sign of infection and is a common sign of some STIs, including chlamydia and gonorrhoea.

Your GP can test you for a number of STIs if you think this could be the cause. (Post continues after gallery.)

3. You’ve just started on the Pill

“When a woman starts the Pill, it is not uncommon for her to get some ‘breakthrough bleeding’ but it usually settles within three months,” says Dr Mary Stewart, Medical Education Coordinator at Family Planning NSW.

This occurs as your body adjusts to the pill, but it should definitely not exceed the three-month period. If this is the case, make an appointment with your GP to discuss your options.


Spotting can also be caused by other contraceptives, whether it’s the IUD, Implanon rod or contraceptive injection. In these instances, often changing the type or dose of contraceptive device is necessary.

Spotting is common in the first 3 months of using the pill.


Women on the Pill who choose to avoid a monthly withdrawal bleed by skipping the sugar pills may find they get breakthrough bleeding after doing so for three to four months.

"It is usually resolved by having a five day break then starting active pills again," says Dr Stewart.

RELATED: Do I need to take the sugar pills on my Pill packet?

While women using the contraceptive implant do not usually get a regular bleed, some experience spotting. For most women it's not an issue; however if it is causing concern, Dr Stewart advises seeing your doctor for advice about how to manage it.

4. Abnormality of the cervix

"This includes a HPV infection resulting in an abnormal pap smear, or other cervical abnormalities such as a fragile cervix or polyp — an abnormal growth of tissue projecting from a mucous membrane", says Dr Fielder.

In these instances, a pap smear and gynaecological examination would be undertaken to identify or rule out this as a potential reason for spotting. (Post continues after gallery.)

5.  Issues in the uterus

Sometimes spotting can be an indicator of issues in the uterus itself. If other potential causes have been ruled out and the bleeding continues, Dr Stewart says a gynaecological ultrasound is the next step.


While there are a range of potential causes of varying severity, the most important things to remember is to seek help from your GP straight away. "Persistent bleeding (more than three months and not responding to a change in Pill and all the initial tests are normal) warrants a referral to a gynaecologist," says Dr Stewart.

RELATED: Is there any truth to these contraception myths?

It's particularly important to be proactive as you get older, as older women have a higher risk of more serious cases.

"Post-menopausal women should always see their doctor if they get any bleeding at all. It should always be investigated early on rather than a 'wait and see' approach," says Dr Stewart.

In some cases, no identifiable cause is found for breakthrough bleeding and it may even resolve itself; stress can also play a part. However, it's always recommended to make an appointment with your doctor as your first port of call.

Do you experience spotting?

On the topic of periods, this Mamamia TV videp will teach you exactly what you should do if you ever find yourself with a lost tampon... yes, inside your body.