4 doctors weighed in:

My periods have changed. When should I see a doctor about it?

4 doctors weighed in
3 doctors agree

In brief: Specific changes.

Periods often change becoming longer or shorter, heavier or lighter, or with differing intervals.
As a general rule, you should check with your doctor for menses consistently less than 20 days apart from beginning to beginning, bleeding longer than 7 days or bleeding and spotting longer than 10 days, unscheduled bleeding or spotting between menses, or bleeding heavier than 1 pad per hour.

In brief: Specific changes.

Periods often change becoming longer or shorter, heavier or lighter, or with differing intervals.
As a general rule, you should check with your doctor for menses consistently less than 20 days apart from beginning to beginning, bleeding longer than 7 days or bleeding and spotting longer than 10 days, unscheduled bleeding or spotting between menses, or bleeding heavier than 1 pad per hour.
Dr. Katherine Sutherland
Dr. Katherine Sutherland
Thank
Get help from a real doctor now
Dr. Adam Levy
Board Certified, Obstetrics & Gynecology
33 years in practice
1M people helped
Continue
108,000 doctors available
Read more answers from doctors