Due to high blood sugar I first stopped my levo- was at 50mcg. Then I went to 25mcg when I got a severe headache after 3 days. The last two days I forgot to take it after forgetting to take it one day and then getting another headache and starting up. My bg is allover, crashing and very high a lot of the time. I just wonder the headaches if any of this is due to the levo or if it could be that I have now messed up my whole message system for thyroid hormone by medication early in the game? I'm not sure what to do and my doc is the last person I want to ask about this. Today I lost my baby boy kitty after a long period of nursing him and I have been very stressed overall from this and from other health issues.