You mean you used .5ml rather than .35mL. I hope. BUt no, there's no consequences, just start using the correct dose, everything should be fine. As Gene noted probably a little more Estrogen, you might see that come down a few points with the lower dose. You're using testosterone so there's no impact there with your own production, that's shutdown and there's no amount of HCG that is going to stim the testes for endo T.