If you’re having heavy periods with clots, chances are it’s normal for you and your heavy flow. Plenty of women see clots in their menstrual blood from time to time. These clots can range from bright red or dark in colour and will usually be spotted on your heaviest days of bleeding. So why do you get heavy periods with clots? Well, your body releases something called anticoagulants that keep menstrual blood from clotting. But when your period is heavy and your blood is being released quickly, there's not enough time for these anticoagulants to take effect, which is why you may experience heavy periods and clotting together. If you are worried about your clots be sure to see your doctor so they can put your mind at rest.