"Yeast infections are not STIs, and health experts don’t know for sure if they are transmitted sexually. About 12 to 15 percent of men get an itchy rash on the penis if they have unprotected sex with an infected woman. If this happens to your partner, he should see a doctor. Men who haven’t been circumcised are at higher risk."
But this is common because all women get yeast infections so chill its not a STD or STI