A member asked:

I'm on nexplanon and was prescribed amoxicillin + clavulanate while on my period and had unprotected sex 2 weeks later. would this increase my chance of being pregnant? i've had cramps for the past week, but had a negative test 8 days after sex?

Q: i'm on nexplanon and was prescribed amoxicillin + clavulanate while on my period and had unprotected sex 2 weeks later. would this increase my chance of being pregnant? i've had cramps for the past week, but had a negative test 8 days after sex?

: Nexplanon is an implanted source of progestin, and may affect regularity of post-ovulatory menstruation. A "home" pregnancy test "eight days after unprotected sex" is too soon to detect a pregnancy. Wait another ten days and obtain a serum HCG test to be certain. Ampicillin is not known to affect the contraceptive action of Nexplanon.

A doctor has provided 1 answer

Dr. John Berryman answered

Nexplanon is an implanted source of progestin, and may affect regularity of post-ovulatory menstruation. A "home" pregnancy test "eight days after unprotected sex" is too soon to detect a pregnancy. Wait another ten days and obtain a serum HCG test to be certain. Ampicillin is not known to affect the contraceptive action of Nexplanon.

Answered 11/8/2022

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A member asked:

I'm on nexplanon and was prescribed amoxicillin + clavulanate while on my period and had unprotected sex 2 weeks later. would this increase my chance of being pregnant? i've had cramps for the past week, but had a negative test 8 days after sex?

A doctor has provided 1 answer

Dr. John Berryman answered

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