Get yourself clomid and Novaldex, unless you want to grow nice tits and loose most of your gains post cycle! HCG alone won´t do anything for HTPA recovery.
Then you should sit down for a while and ask yourself what´s wrong with you. You´re just 18 and you´re going for your second cycle, which is going to be quite a strong one. Would you like to have kids some day? Are you so unhappy with your naturally still growing physique? Want to impress some chicks?
It´s steroids you´re going to do, not creatine.