What Are The Chances Of HIV Post Unprotected Intercourse?

Posted on Tue, 30 May 2017

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Tue, 30 May 2017 Answered on

Wed, 19 Jul 2017 Last reviewed on

Question : 2 weeks ago i had unprotected oral sex(cunnilingus )with a prostitute.The contact was during 2-3 minutes and i only used the top of my tongue,I didn't see any menstrual blood ,i didn't have any sore or bleeding gums in my mouth.Any chance to catch a STI(like HIV).Any advice please?i am so worried...

Answered by Dr. Sankaranantham Murugan (28 minutes later)

Brief Answer:
Oral sex carries a low risk for HIV/STD.

Detailed Answer:
Hi,
Welcome to HCM.
Thanks for posting your query.
Oral sex (cunnilingus) carries a low risk for HIV/STD when compared to anal and vaginal sex as per CDC XXXXXXX United States of XXXXXXX (https://www.cdc.gov/hiv/risk/estimates/riskbehaviors.html)
At the same time, timing and portion of the tongue exposed have no matter in the transmission of HIV/STD.
The possibility of HIV/STD transmission can be ruled out with appropriate blood test and culture test after the window period.
Dr S.Murugan

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

Follow up: Dr. Sankaranantham Murugan (6 minutes later)

and the window period is 3 months?

Answered by Dr. Sankaranantham Murugan (47 minutes later)

Brief Answer:
3 months is an optimum period to detect HIV /STD.

Detailed Answer:
Hi,
Welcome back.
Window period for HIV is 12 weeks or 3 months. For some other STDs, like Syphilis, it will be lesser. But around 3 months most of the STD /HIV can be detected. If there is no other symptoms, throat swab and culture are not necessary.
Dr S Murugan

Above answer was peer-reviewed by : Dr. Yogesh D

Follow up: Dr. Sankaranantham Murugan (20 minutes later)

can i get tested at 4 week first?In my country there is an test who detected both Ac and P24 named Eclia

Answered by Dr. Sankaranantham Murugan (15 minutes later)

Brief Answer:
Test after 3 months is more valuable than the test on 4 weeks

Detailed Answer:
Hi,
Welcome back.
4th generation HIV (COMBO /DUO), test has two components. Antigen detection is reliable by 4 weeks, whereas antibody detection part can be taken as conclusive only after 12 weeks after the risky contract. Antigen part can detect only HIV 1 infection whereas antibody part can rule out both HIV 1&2. But HIV 1 is more prevalent throughout the world to the extent of more than 90% except certain parts of XXXXXXX
Dr S Murugan

Above answer was peer-reviewed by : Dr. Remy Koshy

Follow up: Dr. Sankaranantham Murugan (1 hour later)

I will take this test after 4 weeks and another one after 12 weeks

Answered by Dr. Sankaranantham Murugan (4 hours later)

Brief Answer:
Your decision is very much correct.

Detailed Answer:
Hi,
Welcome back.
It will be absolutely alright. With the 4th week test itself you will be able to know your status to the extent of 99%. It will be 100% conclusive by 12 weeks. I am sure that you will be getting a negative result for both HIV /STD.
Dr S Murugan

Above answer was peer-reviewed by : Dr. Remy Koshy

Follow up: Dr. Sankaranantham Murugan (2 hours later)

thank you doctor!It has been an difficult period for me

Answered by Dr. Sankaranantham Murugan (5 hours later)

Brief Answer:
You are most welcome.

Detailed Answer:
Hi,
You are welcome always. You will be happy.
Dr S.Murugan

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

Follow up: Dr. Sankaranantham Murugan (34 minutes later)

i hope so.I will write you again on 14 XXXXXXX when i will make the test

Answered by Dr. Sankaranantham Murugan (6 hours later)

Brief Answer:
You carry a very low risk only towards HIV/STD.

Detailed Answer:
Hi,
Welcome once again.
I am eager to wait to hear your nonreactive results.
Dr S.Murugan

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar