Thanks for query,
You have no penis abnormality but you have inability to retract skin from glans
this is a condition known as phimosis
Phimosis can not cause any penetration problem but for safer side to prevent accidental tear leads to frenulum
leakage you should be advised to go for circumcision
In this operation they remove skin from glans.This is a routine practice in some community in world as it is more hygienic to clean.