Q. What could be the reason for a foul-smelling yellow sticky vaginal discharge after unprotected sex?

Answered by
Dr. Sameer Kumar
and medically reviewed by iCliniq medical review team.
This is a premium question & answer published on Sep 22, 2022

Hello doctor

I am a 38-year-old woman and had my first unprotected sex last month. My last period day was four days before sex. My menstrual cycle is about 19 to 21 days. I had my next period 18 days after sex lasted for four days. The period was normal, but very little slow flow. After the day of intercourse, I had a yellow sticky discharge with a bad smell, and about three days before my period, I had spotting. Also, on the last day of my period, I now have a very watery, sometimes clear, or light yellow discharge with a bad smell. Some itchiness and stinging feeling were also present before and especially after my period (with the water discharges). As of today, it has been 26 days exactly since I had sex, and I have been tested for pregnancy at home many times, and it was negative. I do not have pregnancy symptoms. Kindly help.



Welcome to

Your symptoms indicate bacterial vaginosis, a bacterial infection contracted by your partner post intercourse. The chances of pregnancy are minimal as you have already had your menses post intercourse, and to substantiate the fact, your multiple urine pregnancy tests have turned out to be negative.

So, in my opinion, you presently require an antibiotic course for seven days, along with the use of an alkaline vaginal wash for the next seven days.

Hello doctor,

Thank you for the reply.

When can I completely rule out pregnancy? This is the first time I have experienced such a watery discharge. I do not know if it matters, but I have one pimple or acne on my eyebrows which has not happened for a very long time. It appeared after my period. I am 38-year-old and have never had any sexual intercourse before.

What are the chances of pregnancy? Concerning my very watery discharge, as I searched the internet, it made me very confused and worried. That is why I came to your application to get the correct final answer from a professional doctor. I wanted to remind you that it has been 26 days since intercourse and over 15 urine home pregnancy tests done until today. All were negative. Kindly advise as I am very much worried and stressed.



Welcome back to

When the urine pregnancy test kit is negative, then you are not pregnant. However, if you do not believe the kits, then the most conclusive way to find out or rule out pregnancy would be to get a blood serum beta hCG test. If the beta hCG levels are less than 5, then you are indeed not pregnant. This test can be done as early as eight days post the last intercourse. It is a highly specific and sensitive test and is the gold standard for ruling out early pregnancy. So you can get it done tomorrow or even today.

Was this answer helpful?


Same symptoms doesn’t mean you have the same problem. Consult a doctor now!

Related Questions:
Why am I having a yellow thick foul smelling vaginal discharge?

You are suffering from bacterial vaginosis which is a bacterial infection ...   Read full

Can unprotected sex on third day of period cause pregnancy?

.. gone through your history and understand your concerns. As you had unprotected sex, the chances of pregnancy are there in your case but as it is done on the third day of menses that is why there is no chance of pregnancy in your case. These sympto...   Read full

Is a yellowish vaginal discharge that is persistent after having sex an indication of a UTI or STD?

Since all reports are negative and you have discharge alone without associated symptoms, it might be a mixed vaginal infection ... I will recommend vaginal pessary for five days and a probiotic available easily ......   Read full

Also Read Answers From:

ideaComprehensive Medical Second Opinion.Submit your Case

Also Read

Coronavirus Variant Arcturus: | Omicron XBB.1.16 Variant
Arcturus is an emerging variant of the Omicron virus that causes various symptoms and spreads rapidly across the world. ...  Read more»
Adrenaline Rush - Symptoms, Causes, Effects, and How to Control
Adrenaline is a hormone responsible for fight or flight response. It is also a neurotransmitter and medicine. It is also...  Read more»
Fatty Liver - Types, Symptoms, Stages, and Treatment
The liver is the largest gland in the body. Its primary function is to process the food and drinks we consume. and filte...  Read more»

Ask your health query to a doctor online?

Ask an Obstetrician & Gynaecologist Now

* guaranteed answer within 4 hours.

Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website. Read our Editorial Process to know how we create content for health articles and queries.