Kindly stop using quadriderm cream, it contain topical steroid which only suppress signs of fungal infection but won't clear it. Even it causes resistant fungal infection. You need oral as well as topical antifungals for 3-4 weeks. Kindly show to nearby dermatologist meanwhile you can use Plain Candid cream twice a day.
Next Steps
show to qualified dermatologist
Health Tips
keep undergarments dry and use after ironing, don't share towels, don't stop treatment unless dermatologist says so