When a period needs a doctor

Most things about periods are normal, but sometimes it is right to talk to a doctor. That doesn't have to mean anything serious. Usually a cause can be found and help is available.

Look out for these:

• A pad or tampon is fully soaked in one or two hours.
• You need to get up at night to change.
• You pass clots the size of a coin or bigger.
• Your period lasts more than 7 days.

Losing a lot of blood can lower your iron and lead to anaemia. You might feel tired, look pale and get dizzy. Sometimes the cause is a problem with how blood clots, and this can run in families. It helps to tell the doctor if relatives have had heavy bleeding.

If pain doesn't ease with the usual things, or it keeps you away from school or your normal day, tell a doctor. Strong pain isn't something you just have to bear.

• You haven't started by age 15.
• It has been three years since your breasts began growing, and no period yet.
• Your periods were regular but have now stopped for more than three months.

Write down your cycle dates, any medicines and your questions. You can go with a parent or someone you trust.

A doctor usually starts by asking questions and may order a blood test. An internal exam usually isn't needed. You can ask the doctor to explain every step.