White spots on Vagina

I recently went to the Dr. and tested for STI. I tested + for Gonorrhea and Yeast Infection. Got the shot to treat Gonorrhea. Recently, it has been burning to pee and my vagina is itchy. I also have noticed i have white spots. Is this because if yeast infection? Is there something else wrong? How can i fix

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this?

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Looks like a yeast infection

Antibiotic shots are powerful! I bet its a yeast infection from the shot. Ive heard yogart can help!