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Yes, Depo (Medroxyprogesterone) may cause a yeast infection. Other few conditions Iike stress, antibiotics, weak immune system, high blood sugar, hormonal imbalance and pregnancy may aggravate the condition.
So, I suggest you use candid-B V gel (Clotrimazole vaginal gel) locally, tablet Fluconazole 150 mg once a week for five weeks. Consult a specialist doctor, discuss with him or her and start taking the medicines with their consent.
For more information consult a general medicine physician online --> https://www.icliniq.com/ask-a-doctor-online/general-medicine-physician