I am on my third injection of my test e 500mg/per week cycle. I pin on sundays and thursdays. I have not felt much from the test yet, but i have experienced a very noticeable decrease in the size of my testicles, about half the size that they were before. Is it odd that I am starting to shut down already? I have no change in libido and have experienced some water retention since i've started. Any opinions are appreciated