iui with gonal f help

Kiwi • Trying for our rainbow after losing our twins in December 2016, conceived by iui. :)
We've been injecting gonal f to stimulate follicules growth for three weeks now, we are on 150 iu daily which is the max we are allowed to get to tomorrow is my scan that determines where we go from the results. I'm hoping to have at least one follicules, that's all I want but gonal f hasn't worked for me yet.
We've tried clomid, metformin and other drugs over the last 5 years. I feel so desperate for this drug to work that I can't sleep. 
Has anyone else had a similar experience with gonal f ??