Mr. lybrate-user, Thanks for the query.
First and foremost is to control TSH
level so that it remains between 3 to 4 mU/L. At that almost all the symptoms of hypothyroidism are in complete check. TSH at 12mU/L, means the dosage of levothyroxine
being taken is not adequate. Once you control hypothyroidism all other issues will be relieved. If you have any questions please do come back. Thanks.