What Does the Colour of Your Period Blood Mean?

Your menstrual cycle can give important clues about your overall health. Beyond how long your period lasts, how much you bleed, or whether your cycle is regular, the colour of your period blood can also provide insight.

If you’ve switched to a menstrual cup or menstrual disc, you may have noticed that you’re more aware of the colour and texture of your period blood. It’s completely normal for colour to vary throughout your cycle. Most changes aren’t a cause for concern but if you notice a sudden, significant difference from one month to the next, it’s best to check in with your doctor.

Period Blood Colours and What They Mean

Bright Red

Bright red blood is fresh, or "new," and is usually seen at the start of your period when your flow is heaviest.

Dark Red

As your period progresses, blood often appears darker. Clots can also make menstrual blood look dark red or nearly black. Passing small clots can be normal, but if you’re frequently passing large clots, consult your doctor.

Pink

Pink spotting can happen at the beginning or end of your period or if your flow is very light. Very light, pink periods can sometimes signal low oestrogen levels, which may be worth discussing with your healthcare provider.

Brown

Brown period blood is older blood that’s had more time to oxidise before leaving the body. It’s especially common at the start or end of your period when your flow is slower.

Black

Black blood may seem worrying, but like brown blood, it usually means older blood that’s taken longer to exit the uterus.

When to Seek Medical Advice

Not all colour changes are normal. See a doctor if you notice:

• Grey or whitish discharge mixed with blood - could be a sign of infection.
• Orange-tinted blood may also indicate infection.
• Very heavy bleeding - for example, needing to change your cup, disc, pad or tampon every hour.
• Frequent large clots can sometimes signal conditions like fibroids, endometriosis, or pregnancy complications.

Remember: Everyone’s “Normal” is Different

Menstrual experiences are highly individual. Some colour variation is perfectly healthy. But if you notice sudden changes, new symptoms or anything that feels unusual, it’s always a good idea to talk to your doctor.

References:

• Here’s What The Colour Of Your Period Says About Your Health — Women's Health Australia
• Period Blood Color Chart: Black, Brown, Bright Red, and More — Healthline
• Period Blood Color: Brown, Black, Dark — Clue
• What Does the Color of Your Period Mean? — Cleveland Clinic