A bad-smelling discharge after sex can be caused by a few things, most commonly bacterial vaginosis (BV) or trichomoniasis, both of which are sexually transmitted infections. Other potential causes include leaving a tampon in too long or, in rare cases, cervical cancer.
Here’s a more detailed breakdown:
- Bacterial Vaginosis (BV):
BV is a common infection caused by an imbalance of bacteria in the vagina.
It often causes a fishy odor, especially after sex, and can be accompanied by a thin, gray or grayish-white discharge.
Semen can worsen the odor because it is alkaline and can disrupt the vaginal pH, making it easier for bacteria that cause BV to thrive. - Trichomoniasis:
Trichomoniasis is a sexually transmitted infection caused by a parasite.
It can cause a foul-smelling, sometimes frothy, yellow or greenish discharge, as well as itching and pain during urination. - Other Potential Causes:
Left-in Tampon:
Leaving a tampon in for too long can lead to a strong, foul odor due to bacterial growth.
Cervical Cancer:
In rare cases, a foul-smelling discharge can be a symptom of cervical cancer, especially if accompanied by bleeding after sex or pain during intercourse.
Yeast Infection:
While yeast infections typically cause a thick, cottage-cheese-like discharge, they can sometimes have a sweet, yeasty odor.
When to See a Doctor:
If you experience a bad-smelling discharge after sex, especially if it’s accompanied by other symptoms like itching, burning, or pain, it’s best to see a doctor.
A doctor can properly diagnose the cause of the discharge and recommend appropriate treatment, which may include antibiotics or antifungal medications.
