Yay! First it was low, then on 100 mcg. (or whatever they are) of levothyroxine it was too high, still high at 75, then 50. But today my doctor's nurse called and apparently at 25 it's fine. I think she said it's 0.86 - (but of course, I deleted it and now can't remember.) Whatever - it's normal.
Anyway, I don't have to get it checked for 6 months now. Better yet, I seem to have stopped losing weight, which I was doing when it was too low AND too high.
It's not a real biggie, but one less thing to worry about - I'm happy! 
Debbie