I Have Been Diagnosed, About A Month Ago With Hypothyroidism.

I have been diagnosed, about a month ago with hypothyroidism. I am taking Levothyroxine 50 MCG tabs one in the morning at least 20 minutes before eating. I was diagnosed with Asthma last week and am on an inhaler, will see Dr. in two weeks. The problem is I still have all the symptoms, which are: Fatigue, difficulty concentrating, cognitive skills are lacking, have a mild fever, 100.7 every day and memory problems. A blood test discovered the Hypothyroidism and a breath test found Asthma. The problem is I'm not feeling any better! I believe I should be getting some relief by now. I am so tired I can hardly get through my work day. Any advise?