Talk to Urologist on Urologist

Sir my age is 20 year I'm not concerned about my size what ever it is but I don't feel confident and relaxed throughout the day only when I feel urge to urinate and after urination only that time I feel confident and relaxed,Also my penis size is only 1.5 inch and when I have feel urge to urinate then it is 2.5 inch and erect is 5 inch is this a concern for worry