Dear Patient,
there is a medical condition known as phimosis , it is really important for the patient to get a proper diagnosis done,please do not ignore this till the time you get it checked, kindly avoid indulging in aggressive masturbation or sexual intercourse until you get it examined.
Next Steps
Get it examined at the earliest. You may contact a sexologist to understand your condition better.
Health Tips
Keep your private parts clean and hygienic.