Many STDs share the same symptoms as yeast infections, and it can be difficult to determine what is causing the symptoms. Although yeast infections are not considered a sexually transmitted disease, it is possible for your partner to contract it during sexual intercourse. Herpes, genital warts, and trichomoniasis (trichomoniasis) can also cause irritation, itching, and faintly smelling secretions. With other sexually transmitted diseases, such as gonorrhea, you don't always have symptoms, but you may feel pain and burning when you urinate.
However, the main concern that every woman should feel is to misdiagnose a potentially harmful STD such as a yeast infection. If ignored, most STDs can cause serious health problems that can almost always be avoided with early detection and treatment. In addition, all pregnant women should get tested for STDs, especially since women are more likely to have a yeast infection during pregnancy. In short, there is no real way to know if you have an STI or a fungal infection simply by doing the “eye test”.