PCOS / PMOS & Periods
Answers to common questions about pcos / pmos & periods.
Questions on this page
Why are my periods irregular?
Irregular periods can occur when ovulation does not happen regularly.
PCOS / PMOS is one common cause, but thyroid disease, high prolactin, weight changes, stress and other conditions can also cause irregular periods.
How often should periods occur?
A typical menstrual cycle is around 21–35 days in adults, although there can be individual variation.
Persistently very irregular or absent periods should be evaluated.
Is it dangerous to have periods only once every few months?
It can be.
Long gaps between periods, particularly in PCOS / PMOS , can increase the risk of excessive thickening of the uterine lining.
Can PCOS / PMOS cause heavy bleeding?
Yes.
Irregular ovulation can sometimes result in prolonged or heavy bleeding.
What causes periods to stop?
Possible causes include:
- Pregnancy
- PCOS / PMOS
- Thyroid disorders
- High prolactin
- Significant weight loss
- Excessive exercise
- Stress
- Premature ovarian insufficiency
- Certain medicines
When should I see a doctor for irregular periods?
See a doctor if periods are persistently irregular, absent for several months, unusually heavy, very painful or associated with symptoms such as excess hair, acne, weight changes or difficulty conceiving.