It's going to take you at least the 40 days to lose that much. 34 pounds is actually the upper limit of what's allowed. Most women lose 25-28 pounds in 40 days. You can continue to do what you're used to. Many of us are on thyroid meds but Synthroid is the worst of the bunch. I'd ask your doctor to either add come T3 (cytomel) to the synthroid or better yet to switch you to Armour. Good luck!