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A 37-year-old member asked:

can switching of birth control cause your period to be off a few days?

1 doctor answer1 doctor weighed in
Dr. Shiao-Yu Lee
Specializes in Gynecology
Period change: I guess you mean birth controll pills. The answer is your body may be adjusting to the new pill, but do a pregnancy test to be sure.

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Similar questions

CA
A 39-year-old member asked:

What is the purpose for the doctors making you start your birth control on the first day of your period?

2 doctor answers11 doctors weighed in
Dr. David Fein
Specializes in Preventive Medicine
Prevent ovulation: The ovary wants to release an egg every month, and the production of the cyst to release that egg can start as early as the 3rd or 4th day after your period starts. Starting low-dose birth-control pills on the first day of your menstrual period ensures the ovulation process is prevented from ever beginning.
Dr. Ralph Boling
Obstetrics and Gynecology 39 years experience
Birth control fully effective with first pack
Apr 17, 2019
Canada
A 19-year-old female asked:

I started the 21 pack of birth control a couple days before my expected period. What will happen with my next period?

1 doctor answer1 doctor weighed in
Dr. Gina Cadena-forney
Family Medicine 21 years experience
Will be delayed: Your period will be delayed until you are on the placebo pills of your birth control.
A 48-year-old member asked:

For what reason do you take birth control on the first day of your period?

1 doctor answer1 doctor weighed in
Dr. Daniel Rychlik
Fertility Medicine 26 years experience
Pill day: You can take the pill on the first day of the menses or the first saturday. The days are not important. Saturday is offered to make the start easier and the menses to occur during the week.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

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Last updated Sep 28, 2016

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