Sounds like hyper symptoms. Did you change anything about how you take your meds? For instance, if you were taking them with food before, then switched to taking them on an empty stomach (the preferred way) then you might be absorbing more and getting an effectively higher dose. Have you changed brands of thyroid medication? Or, like I said, autoimmune diseases can calm down during pregnancy, maybe your thyroid antibodies have decreased?
Still - going from 125 to 100 is a pretty good drop - I would hate to see you overshoot and become hypo. (I wish we knew your free T3). You might ask your doctor to try a smaller decrease first, to 112 mcg (they can have you alternate 125 one day with 100 the next). What is your resting pulse?
