I found myself in a similar position in April/May of last year.
I was pretty much told the same as what the previous posters have said:  Wait for the appointment.  Count the days, or even the hours, if it comes to it, but wait for the appointment.
Fortunately for me, my Urologist is trans-friendly.  When I saw her for my scheduled appointment at the start of May, she prescribed an anti-androgen for my already existing (if somewhat minor) prostate issues.  That was the first (& so far only) time I have ever been grateful to have encountered prostate trouble in my mid-20s.
I can attest to the fact that self-medicating can be dangerous.  I landed myself in the ER by self-medicating in January 2013.  Don't do what I did.