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25th February 2018
09:00am GMT

Pink
Pinker blood could mean low oestrogen. This can especially affect very active women as exercise can diminish your oestrogen levels, says Prevention.com. This isn't too concerning but low levels of oestrogen can lead to osteoporosis later in life. Pink blood can also be a sign of polycystic ovary syndrome, so talk to your doctor if it's a regular problem for you.
Bright red
This is newer blood, which is why you'll typically see it on day two or three of your period as your womb lining breaks down. It's perfectly normal, but if you see bright red blood between periods, it can be a sign of STDs like chlamydia and gonorrhoea.
Brown/ black
Darker blood is old blood that has has a chance to oxidise, according to Healthline. It tends to appear at the start or end of your period and might be thicker than other blood but is generally nothing to worry about.
Grey
Something's wrong. Grey blood is often accompanied by a nasty smell and indicates an infection, such as an STD. Don't delay in getting tested.
Clots
Clotting in the heavier days of your period, when your uterine lining is being shed, is normal but clots bigger than a €2 could be a sign of a hormone imbalance. Again, chat to your doctor if you're worried about this.Explore more on these topics:

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