Health care people are used to all types of length so do not worry.There are many persons who have a small penis. Erotic zone of vagina is 3 inches deep. So anyone having 2 or 3 inch penis can satisfy a female sexually.
Look man it is what it is unfortunately you got a small package and its not okay ,but theres nothing you can do about it . If your wifes happy then its cool . But im 16 and with an erection im 6 inches deep