A 19-year-old female asked:

I left my birth control pills in my hot car for about 30 minutes. it was 89 degrees outside! i had sex last night and he finished inside me but now im scared theyre compromised now. i take norethindrone (pop). should i be worried about pregnancy?

1 doctor answer1 doctor weighed in
Dr. James Ferguson
Pediatrics 48 years experience
I don't consider the cited exposure for 1/2 hour enough to cancel out the effectiveness of your pill. All forms of BC have a failure rate but with the pill it is usually from forgetting for a few days.
Created for people with ongoing healthcare needs but benefits everyone.

Related questions

A 43-year-old member asked:
What happens if I forgot to take one birth control pill (micronor) after sex?
Dr. David Kurss
Obstetrics and Gynecology 37 years experience
Risky: Micronor- as with all progestin only pills - work primarily by thickening the cervical mucous- not by inhibiting ovulation. The thickening effect wear... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 29-year-old member asked:
What happens if I forgot to take one birth control pill (micronor) two days after sex?
Dr. Kevin Windisch
Pediatrics 27 years experience
Pregnancy: Most likely nothing bad will happen but if you forget to take an oral contraceptive pill your risks of pregnancy and between period bleeding are incre... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old female asked:
I take my birth control each night on time and havent missed a pill yet. I am 195 and I am on Lo Loestrin fe. I been having unprotected sex with my boyfriend and he finished in me. Should I be worried on this pill to prevent pregnancy of low dose?
Dr. John Berryman
Obstetrics and Gynecology 56 years experience
"Low dose" bcp's taken as directed and within the hour of the prior day's active pill are close to 96-98% protective against pregnancy. One aspect whi... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 24-year-old female asked:
I started taking birth control pills last month and just finished my sugar pills (period). Im taking a new pack of pills right now and wondering how long it takes for the pills to resume high efficacy against pregnancy. A few hours? Days?
Dr. John Berryman
Obstetrics and Gynecology 56 years experience
Regardless of the "brand" of oral bcp's, if the"placebo" ("sugar") pills are taken for seven days, then a new series of active pills is started, the c... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old female asked:
Forgot to take extra boxes of birth control out of car. I take Norethindrone tablets. They were in the car for 5-6 days and temperatures have dropped down to 30. Are they still effective?
Dr. Robert Kwok
Pediatrics 35 years experience
Unlikely any change: That's like keeping pills in the refrigerator or its freezer. Cold temperature should not affect the ingredients. Most likely, the pills are still the... Read More
Created for people with ongoing healthcare needs but benefits everyone.
View all answers
Last updated Jul 28, 2022

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.