Suggest Treatment For Erectile Dysfunction

Hi ,

I am 28 years , male in India. I am having erectile dysfunction.

I am not married and i have not had sex with anyone. But it is during masturbation i have found to have very weak erections. I remember having the problem since i was around 21-22 years old, before that i dont remember.

In May this year i decided to see a doctor. I saw a physician and a psychatrist. On having the testestorone test, it came to be low normal (details of all tests at end of email).The physician gave me to have Vitamin E in the night and the psychatrist gave me the following medicines a) Flunil 20 after morning breakfast
b) Stablon 12.5 after dinner. I was having the medicines since June 7th. (Vitamin E since May 21). Since there was no improvement in erection i switched doctors.

I am now seeing a sexologist and a different psychatrist. In the prolactin test, results came to be normal but on the higher side. TSH and Diabetes are all normal results. Since last week i have stopped the previous medicines and i am having the following now since 29th June as prescribed by my current doctors -
a) Cavenar Sachet - one sachet after morning breakfast (prescribed by sexologist)
b) Paro-10 after dinner (prescribed by the psychatrist)

I am anxious about this since I was 21 years old. I would also like to share a recent incident. The sexologist had asked me to go for Penile Doppler test. The male doctor at the medical centre measured my penis flows under normal condition. He then asked me to masturbate to get my penis erect while he would wait outside. I could not make it erect and he asked me to leave it. He then left and i was surprised to see a young female nurse come in.She took my penis in her hand and fiddled for some 5-10 seconds, but it was still not erect. She then gave me Viagra pill and after half hour asked me to masturbate when i was alone. I was very embarassed as i could not get an erection even then and she came in , smiled and said I was not fit for the test. Is this the correct way the test is done ? I had heard , there is an injection given. Is it abnormal for me not to get an erection even when the nurse held my penis. I have weak erections , but better than this. I was embarassed. Is it most probably that i have leaky veins and hence failed the penile doppler test ?

My medical results are given below -
Testestorone : 4.21 ng/ml. Men Range : 3.0-10.6 ng/ml
Prolactin : 10.64ng/ml. Men Range : 3-25 ng/ml
TSH, Diabetes test - certified normal by doctors.