Nicky,
Have you talked with your therapist, preferrably a psychiatrist (an MD)? There are some treatments for adult ADD. Your symptoms are very similar with mine, except that I was functional at work. I was one of the regional top guns in my line.
I have dyslexia as well, also my train of thought was 3 agendas at once. Depression was a problem as well, the 4 antidepressants prescribed to me did not do anything for all this. In my case it is the GID. The HRT seems to work on me, my mind calmed-down, a single train of thought emerges, and I do not swear at myself for the slightest boo-boos after 1 month HRT. I do not feel depressed anymore. I feel a lot better, cleaner, and closer to God. The dyslexia will never disappear, as I had to go back and do some corrections to this post before sending.
Evidently your HRT regimen did not work for this, other treatments should be tried. God loves you, hugs!
Joelene.