A member asked:

My period is due in 2 weeks. i had unprotected sex last night and took the morning after pill 3 hrs later. chance of pregnancy?

A doctor has provided 1 answer
Dr. Jeffrey Levine answered

Specializes in Family Medicine

May depend on weight: The fact that u used emergency contraception (EC) within 3hrs of unprotected sex significantly increases it's potential to prevent pregnancy. I assume u used Plan B or similar over the counter product, correct? There are some recent studies that suggest those EC meds may be ineffective in women with BMI > 26. ELLA (ulipristal acetate) is more effective for women up to BMI of 35. Copper IUDs work best regardless of BMI

Answered 11/11/2014

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