I got my HCG today. 5000 iu. I want to inject 250iu twice weekly. The needle I am using is 23gx1 and only has ml measurements. Someone know the conversion? Also it came with sodium chloride injection. So I inject HCG into Quad then immediately with a different needle inject the chloride?? How much chloride? That's the way I am reading the instructions. Just want to make sure. Thanks.