Recurrent yeast infections do occur in persons with HIV but there are also several other more common reasons such as tight clothing which can trap heat and moisture (suitable conditions for fungal growth), pregnancy, diabetes, oral contraceptives, extended-spectrum antibiotics, and obesity. Hope that answered your question!
and anxiety... drops the immune system down, thus allowing oppertunistic infections to settle in... it give yeast a chance while your gaurd is down. The yeast is in their sucker punching you right now!\
Get some rest & stop the stress.