Worried, nervous, tensed. Must contact.

Worried, nervous, tensed and asking questions again and again. Have other problems, says that she has a blur vision ( has spects also) and does not feel strength in her legs and waist( when she is walking. All this stated in 2014 Feb. What i remember is that she had a severing cold with fever (in Feb 2014) and recovered out of it. But gradually she lost 12-14 kgs of weight over a year( without any effort) and getting tensed, worrying about silly things and lacking confidence ( blur eye sight and feeling weak legs) took over her personality. Caution : We did all the medical checkups( even cancer and TB) and we could not find a route cause of the issue. Its the same till date. May please advise.. to which specialist we must contact. Note: She has diabetes and Hypothyroid