I am about to start HCG week 6-12 250eOd but have afew questions I can't seem to find answers to. These are more so person preference questions and this being my first time with it I would like to do what is most common and beneficial.

a) With Deca completly shutting you down everytime you shoot is in pointless to take HCG while using it?

b) If I do use HCG will it continually change my natty levels thus leading to unwanted sides?

c) Can you mix HCG with test and inject into muscle or does it need to be shot slin pin?

d) Where is the most common place to shoot HCG in a slin? Anywhere an body or do people stick around the groin (i.e. lower abs upper quads)?