Do you have a vitamin B12 deficiency? If so, that could cause the numbness in your hands, or you could just be sleeping on them the wrong way.
Yes, I'd say your hypotension when standing could be from dieting and not keeping blood sugar levels stable. Hopefully, once you get on the proper dose of levo, your excess weight will come off, since weight gain is a symptom of being hypo.
"He also ruled out Hasimoto syndrome saying it was not prevalent in India(where I stay).