Last January I had a virus. Blood pressure up and down. Lack of energy. This week I had the same, except I didn t have a sore throat. Went to Urgent Care Friday, did all sorts of tests EKG, blood etc. and nothing was abnormal. I m used to swimming a mile or so every other day... last Monday all I could do was 1200 yards, and I was exhausted. Wednesday I could only do 900 yards. But I did ride my bike on boardwalk. I do all sorts of mediacal drugs, Plavaix, ace inhibitor, betta blocker, yada, yada and have been doing so for years. So somethng has changed. Thirod test results not back yet. Seems energy returns when I eat. That is different than the past. Could my sugar be going up or down? a