My dose of Levothyroxine was put up from 75mcg to 100mcg just over two months ago. I have been feeling hot at night (but not sweaty) and my resting heart rate has gone up from 66bpm to 75bpm. When tested recently, my TSH was 3.5, but the lab forgot to do my T4. Is there any chance I might be overmedicated? It's possible the symptoms could be in my head as 75-100 sounds like a scary jump? Also, when I had my results done on 75mcg, they were T4 17.6 TSH 6.5. So would the TSH coming right down to 3.5 mean the T4 may have shot up too high?