Can sperm survive in menstrual blood?

Answered by 1 Apollo Doctors

Dr Chandra P

General Practitioner

MBBS
5+ Yrs

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Women are not able to conceive whilst on their period, but sperm survives within the female reproductive system for up to five days. This means that a tiny fraction of women do have a small chance of becoming pregnant during their period.

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Answered 04/07/2025

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Sperm Survival in Menstrual Blood
Sperm survival in menstrual blood is generally limited. Menstrual blood creates an environment that is not very supportive for sperm due to its acidity and presence of immune cells.
Optimal Conditions for Sperm Survival
Sperm typically survive best in cervical mucus around ovulation, which is more alkaline and nourishing. Under optimal conditions, sperm can survive inside the female reproductive tract for up to 5 days.
Potential for Pregnancy
While sperm survival in menstrual blood itself is unlikely, if sperm enter the reproductive tract during menstruation, there is a small chance they could survive and potentially lead to pregnancy.
Recommendation
If you have concerns about fertility or contraception, discussing with a healthcare provider can provide personalized advice.

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