Impotence

I'm 66 yers old. I have been using v!agra for seven years. I started with 25mg and I'm now using 100mg. I have a very large penis and it never really got rock hard. Years ago I went to a doctor about this and he told me that it was the size. He told me that I might have erection problems later in life. Well the 100mg v!agra tablets aren't working now. I'm healthy, I work out and I don't take any other medications so I'm wondering if it is the size of my penis that is finally causing my complete impotence. Would injections be the next step? What kind of tests do doctors do? When I told the doctor 7 years ago that I was becoming impotent, she prescribed v!agra without giving me any tests. Tweet