I am 30 years old. I think my penis is small.
When flaccid its only an inch and a half, when erect almost five inch and a half (5.5 inches).
Is it OK?
From MF: Hi there, your penis has good shape and proportions. Size wise it is very bottom of the average penis size. So we would advise to consider adding say half to an inch to reach the medium or upper line of average (6.5 inches). This will greatly help with your sex life. More info on enlargement here.
If not sure, try to wear a cock ring and see if partner notices increased sensations. Penis enlargement would give you same and even bigger effect.
Either way, choice is up to you. Thanks for creative pictures though!