3 doctors weighed in:

Does morning after pill affect period? Ie make it come faster? When wil it be possible to know if it worked?

3 doctors weighed in
Dr. Hugo Ribot
Obstetrics & Gynecology
2 doctors agree

In brief: No necessarily

Although the patient should be informed that their next period may be heavier or lighter, earlier or later, 95% of patients have their menstrual period at the usual time or within ±7 days.
The sooner it is taken after the unprotected intercourse, the more effective it is. If taken within 72 hours, it will prevent 7 out of 8 undesired pregnancies. If you are more than a week late, do a preg test.

In brief: No necessarily

Although the patient should be informed that their next period may be heavier or lighter, earlier or later, 95% of patients have their menstrual period at the usual time or within ±7 days.
The sooner it is taken after the unprotected intercourse, the more effective it is. If taken within 72 hours, it will prevent 7 out of 8 undesired pregnancies. If you are more than a week late, do a preg test.
Dr. Hugo Ribot
Dr. Hugo Ribot
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