Got my second/booster injection this morning. Looking at the date of my last post, I see that I accidentally got it a week early. I'll be sure to space the next one out correctly.
This time the nurse injected it all into one buttock, but I asked her to do it very slowly, and sure enough it was much less painful. After the first injection I thought a disadvantage of Nebido would be injection pain, but now I think the opposite -- fewer injections and they don't even hurt.
So far, the effects I have seen have been increased numbers of erections, more hypertrophy from working out, and slight acne here and there (nothing bothersome, just a sign that something is going on).
Unfortunately, I have not experienced sexual improvements beyond the more frequent random erections. Still suffering from anorgasmia, genital anesthesia, and low libido.