Medical Specialty >> Gynecology

Doctors Lounge - Gynecology Answers

Back to Gynecology Answers List

If you think you may have a medical emergency, call your doctor or 911 immediately. Doctors Lounge ( does not recommend or endorse any specific tests, physicians, products, procedures, opinions, or other information that may be mentioned on the Site.

DISCLAIMER: The information provided on is designed to support, not replace, the relationship that exists between a patient/site visitor and his/her physician. Please read our 'Terms and Conditions of Use' carefully before using this site.

Date of last update: 10/14/2017.

Forum Name: Gynecology

Question: starting birth control mid cycle

 ancam - Wed Oct 14, 2009 9:06 am

I am on day 15 of a 32 day cycle. I have been off birth control for 2 years because of pregnancy, and later nursing. I had an apt. yesterday, and have a perscription to start the tri-lo-sprintec. How long will it tak to be effective if I start it now? I know it's best to wait, but I would really just like to start getting in the habbit now of taking it.

Thank you for your time.
 Debbie Miller, RN - Wed Oct 14, 2009 10:56 pm

User avatar Hello,
It won't hurt anything for you to start taking the pills mid-cycle but you may already be ovulating and it won't prevent pregnancy if so. It is most logical to use a condom until your normal starting cycle but if your main point is to start the habit, you could go ahead but should still use back up birth control until your first period while on the pill.

Best wishes.
 ancam - Thu Oct 15, 2009 2:50 pm

Thank you for your help!!
 Debbie Miller, RN - Sat Oct 24, 2009 11:02 am

User avatar You are welcome!

| Check a doctor's response to similar questions

Are you a Doctor, Pharmacist, PA or a Nurse?

Join the Doctors Lounge online medical community

  • Editorial activities: Publish, peer review, edit online articles.

  • Ask a Doctor Teams: Respond to patient questions and discuss challenging presentations with other members.

Doctors Lounge Membership Application

Tools & Services: Follow DoctorsLounge on Twitter Follow us on Twitter | RSS News | Newsletter | Contact us