Maria
I have been researching hypothyroidism and sometimes it takes up to two months. The doctor might have to keep adjusting your medication untill your level becomes normal for you. Also remember that if your medication is to strong for you, you can get hyperthyroidism. You should be watching for these signs also. If you dont see a change call you doctor for another blood test. Remember take you pill everyday for the rest of you life. If you dont take it you could put yor life in DANGER. God bless!