Irregular periods: which doctor to see
The cycle can be thrown off by stress, travel or weight changes — a single irregularity is not alarming. But if periods have been irregular for three cycles or more, very heavy or painful, book a gynecologist.
Common causes
- Stress, lack of sleep, intense training
- Rapid weight change and strict diets
- Hormonal shifts — thyroid, prolactin, PCOS
- Starting or stopping hormonal contraception
- Perimenopause after 40–45
- Pregnancy — the first thing to rule out when a period is late
When to seek urgent help
Do not wait for a scheduled visit if you have any of these signs:
- Heavy bleeding — a pad an hour or more often — call 103
- Severe lower abdominal pain with dizziness and weakness
- Bleeding during a possible pregnancy
- Spotting after menopause
- A missed period with acute one-sided abdominal pain
Ambulance: 103 (103 from a mobile) · Unified rescue service: 911
Your specialist
Gynecologist
What to bring to the visit
- A cycle calendar for the past few months — an app or notes
- Previous ultrasound and hormone test results, if any
- A list of medicines and contraceptives
- Details of pregnancies and births
Frequently asked questions
How many days late is a reason to see a doctor?
First — a pregnancy test. If it is negative and the delay is over 7–10 days, or irregularities keep happening, see a gynecologist.
Where does the endocrinologist come in?
Hormones govern the cycle, and the problem may start with the thyroid or prolactin. The gynecologist will involve an endocrinologist if needed.
The information on this page is for reference only and does not replace a doctor's consultation. Only a doctor can make a diagnosis in person. If your condition worsens, call 103.