Hello and thanks for trusting me to help you. I am a board certified consultant with over 30 years of experience. I understand your concern.
Well as you describe,it sound fungal infection.
And you should try some self care measures for few days.
Take OTC Motrin and Claritin.
Have a cool water bath with antiseptic soap.
Keep area dry and clean gently.
Also apply OTC 1% hydrocortisone cream mixed with Clotrimazole(lotrimin) cream.
You can use OTC Abzorb powder.
And wear loose cotton clothes to prevent friction.
If your symptoms'll not relieve over the time then see your doctor for further evaluation and management.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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Waiting for your response.