Hello I appreciate your concern Recurrent yeast infection can be related to diabetes or low immunity This could be due to PID, fungal infection like candida or bacterial vaginosis I would like further information to guide you better Your age and complete medical history I would advise you for few investigations like blood for hemoglobin CBC Liver function test , blood sugar, urine culture and sensitivity test and vaginal swab for culture and KOH fixation test You may require a course of antibiotics or antifungal either in the form of oral drugs or vaginal pessaries Meanwhile maintain good hygiene Have plenty of fluids Use condom for sex if you are sexually active Hope this answers your question thanks and regards