Hello doctor i am a 18 yrs old boy, i recently found that i have smegma, unnoticed for weeks, i feel little pain while rolling back my foreskin, i started cleaning from yesterday, and fortunately i cleaned from my glans, but i could not clean the ring of my glans, i used warm water for cleaning, but i could not do same for the ring of my glans. What schould i do for it? Thank you.