Passing blood clots during menstrual cycles is often a normal occurrence during the heaviest days of the period. However, heavy bleeding and passing large clots can sometimes be a cause for concern. Here are some potential causes for large blood clots during periods:
- Uterine obstruction like a fibroid
- Thyroid conditions
- Over-the-counter and prescribed medications
- Medical conditions that cause large blood clots, often alongside heavy menstrual bleeding or period pains
- Uterine fibroids
- Heavy menstrual bleeding (menorrhagia)
If the clots are larger than a quarter in size, very frequent, or occur with an abnormally heavy flow that requires a person to change their tampon or pad after less than 2 hours, it is advisable to seek medical advice. A doctor can determine if theres an underlying problem causing heavy periods and recommend appropriate treatment.
