The impact builds with every injection and it can take four or five weeks before the full effect appears at that amount. You can look at this chart to see how the levels add up over time.
I am really puzzled. This is only my second shot. I began at 1 mg each week split into two 0.5 mg doses every three days. After the second one I still feel nothing and actually seem hungrier than usual. How many weeks does it normally take before any change shows up?