Hello,
Yeast infections present as red, itchy patches rather than sores. If sores are present in an yeast infection it can be due to secondary bacterial infection caused by scratching of the area. If you are sexually active then these sores can be due to herpetic sores also. Other possibilities are boils, abscesses or infected cysts.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
Thanks for the help jerkkoffss