Welcome to the forum, :wave
I was diagnosed with microcytic aneamia when i was 6/7yrs and nearly die.(that was in the 60s')
later on in life was found to have sickle cells and thal intermedia,I'm 53 yrs and went to hell for the better part of my live just because i met with incompetent doctors and wasnt diagnosed earlier
It is very disturbing to here that your heamoglobin is so low and it seems that doctors are playing russian roulet with your life,
Dont give up take Andys advice seek help from other source ,there are alternatives ,you need to be resourcefull and persistance,
goodluck and I hope you do get the help you need inorder to live a satisfying life.
Kathy