Hi I'm 46 almost 47 and my periods are late by 3...

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Regarding your question,

Treatment of late menses

It is common complaint due to many factors and causes. Based on your question and your age, pregnancy still the commonest cause of absent menses and female can be pregnant at this age thus it is better at first to do pregnancy test to exclude pregnancy at your case. If there is no pregnancy i see the wait for one more week as late pregnancy just for three days is not sufficient and necessitate investigations.

Advice

After excluding pregnancy, i see to wait and no need for your doctor evaluation at this time, you can seek for medical help if your menses does not come after one to two weeks from the expected date.
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