daisy, I take 0.15 mg of synthroid 6 days a week. Your dr. will do blood work after a certain length of time to get your synthroid regulated. Don't be surprised if this process takes several months to accomplish. That is no big deal, as it took me about 9 mo. of trial and error of blood work.
Congradulations on a successful surgery. You are over the toughest part now, time to sit back and cruise!! lol

sincerely SongBird