The gonal f most have is a premixed pen that needs to be in the fridge, and my fs said to take it between 6&9pm. That one you can't screw up, as you just turn a dial to the amount you are supposed to have, change the needle tip and inject.
I have had powder stuff but that was menopur, or bravelle, or repronex.Those didn't need to be in the fridge because they were a powder. The liquid was just saline, and it didn't matter as much how much of that you got out, my fs recommended only 1.5cc of it to mix into the powder.
If you ever have to do it again, I'd ask for the premixed pen, soooo much easier.
Also, there are some pretty good YouTube videos out there on how to mix and inject.
Sorry you are having such a rough time with it all.