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What are the chances of my partner getting pregnant after I perform oral sex on her with semen on my mouth?

Age: 16 - 29
Sexual Health
DOCTOR’S ANSWER (2)
The enzymes in our saliva make it unconducive for sperms in human semen to survive. I would say that the chances of conception would be low. 

Barrier contraceptive techniques (i.e male condom) would still be recommended if you are concerned about getting your partner pregnant.


Dr Ronny Tan Ban Wei

Advanced Urology

Advanced Urology
Mount Elizabeth Medical Centre
3 Mount Elizabeth
Suite #17-14
Singapore 228510

Advanced Urology
Parkway East Medical Centre
319 Joo Chiat Place
Unit #02-05 Singapore 427989
Tel: +65 68810048


347 views 25 Apr 2019
Dr Ng Beng Yeong
"Psychiatrist with over 20 years of experience"
(9 Reviews)
Thank you for asking such a fascinating question. The survival of sperms outside the man's body depends largely on the circumstances and environment that they are exposed to. On a dry surface, such as clothing or bedding, sperms are dead by the time the semen has dried up. Sperms can remain viable for up to 5 days when they are ejaculated within a woman's reproductive tract. In a nutritive liquid like a culture medium in a laboratory, the sperms can also survive for several days.
 
However, here the scenario that you pose concerns the mouth and saliva. Saliva is hostile to the sperm cells. It is quite hard to predict as to how long the sperm cells can survive in such an environment. There are no proper scientific studies that have been done so far.
 
May I suggest the following: if you are worried about your partner getting pregnant, then it will be good to seek proper medical attention. If you and your partner have problems conceiving, then the best option is to seek help from a medical expert in subfertility such as a gynecologist.
 
Wishing you and your partner all the best in your journey ahead!

Dr Ng Beng Yeong
MBBS, MMed (Psychiatry), FAMS

NG BENG YEONG PSYCH MEDICINE CLINIC
3 MOUNT ELIZABETH
MOUNT ELIZABETH MEDICAL CENTRE
#15 - 05 Singapore 228510

335 views 1 May 2019
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