Hello thank you for writing us here. Most probable cause could be fungal infection. You have to take shower at least twice a day and changing your undergarments each day. You can also use coconut oil at the affected area which would bring a lot of difference. Using a good antiseptic sopa and also washing your clothes and tower would make a lot of improvement. You ll be alright in a week I m sure. But if it doesn t improves, I would suggest you to use CANESTEN (coltrimazole) ointment. But first few days, use coconut oil okay? You don t have to spend few bucks for ointments instead when you have natural remedies at home. God bless you Best regards, Dr Gunjan