While it is not possible to diagnose diseases on symptoms it appears that it is possible that you might be having fungal infection
In hot humid climate like India, recurrent fungal infections are common
Persons who dont clean the penis head of its secretion are prone to have fungal infections
Next Steps
While having bath clean the skin and underneath.
do not use soap
just use plain water to clean.
If you feel you can clean after every urine passage too
Health Tips
you need to visit a skin specialist to get examined and treated
Also please take curds in meal at least 4-5 times a week