All the symptoms are looking like related to decreased level of Hb and related to decreased function of the thyroid
You should have workup for that which includes Blood CP and Thyroid Funtion tests and Serum Calcium levels for the cause of all the symptoms.
For the leg pain just take any muscle relaxant
or pain killer.
I hope I am succesful in solving your query If you have more you can ask me.
Dr. Azhar Sattar