I need help in understandig what my thyroid test means?

A goal of TSH at 1 is good advice. Which is your current TSH? 3.31 or .42? .42 is fine as long as your FT4 (and FT3) are normal, and your's is. If you are having hyperT symptoms at this level, alternating the dose as the dr suggested is the right thing to do. that will probably bring you up around 1 or so.