Talk to Urologist on Urology And Sexology

I m 27 years old unmarried guy. I have problem of small penis and masturbation. I do it almost daily. I have noticed that my penis has been decreasing in size the glans penis is grtting increased in size but the shaft is decreasing. It used to br 4.25 total length a year ago but now its 3.75 inches and when fully engorged about 4 imches and when i press hard deep against the pubic bone it gets to 5 inches Max. it used to go to 5.5 and 5.75 inches max when pressed the ruler hard against the pubic bone. My weight remains the same. I have proper erection. Normal prolactin a And testosterone and fsh. Whats the reason for decreased penis size. Kindly guide as its creating tension for me. I m using fluoxetine and amlodipine. As well. And inderal. For high blood.pressure