Hi, this morning I woke up feeling off balanced and somewhat light headed. I stood up to walk & stumbled to the side. The only medical problem I have to my knowledge is a Hypothyroid. I was diagnosed with this condition approximately 7 years ago. My doctor prescribed 30mg Armour Thyroid which I haven't taken in almost a year. I haven't been feeling tired which is a symptom associated with having an uderactive thyroid. 7 years ago I felt REALLY TIRED even after sleeping 5,6,7,or 8 hours . Now I dont have that problem. But for some strange reason this morning, when I sat up in my bed, I noticed something wasnt right. So I slowly got out of bed & stumbled to the side when I tried walking. I drink plenty of water everyday so I doubt this could be dehydration. What is causing me to feel this way and Should I go to the ER immediately?