If you're using HCG properly, you will not need to inject it that often. A small amount, twice a week is sufficient. Look at post #10 at this link: Invalid Link Removed, which gives you the Swale Protocol, a good guide for using HCG along with PH or AAS.
Honestly, if you're using a 25 or 23 guage, brand new needle, injections don't hurt for more than a split second. If you can't handle pinning, there are a lot of people here (and on other boards, and in your gym) who will say that you're in the wrong game.
/karp