Hi Bali1962 when I was diagnosed with P.A. 45 years ago I was "threatened" with having to eat raw liver three times a day but as I didn't fancy that I opted for b12 injections,
Have you tried negotiating with your doctor to increase the frequency of your B12 injections. I know this is often met with a "one size fits all" reaction and rejection but given your symptoms, your diabetes and age it could well be that you need more B12.
I am not a medically qualified person and there are others on here who will be able to give you good advice.
it is going to be really difficult to tell exactly what is causing the lack of energy given that you seem to have several conditions going on. Feeling tired during menstruation in particularly may well be related to the iron deficiency.
It is possible that high dose oral B12 might help - or nasal sprays if the problem is B12 or to the extent that the problem is B12 deficiency. You might also want to try the different forms of B12 - eg methyl and adenosyl to see if those help you more than hydroxo/cyano.
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