Hi im 7 months post partum and juat been diagnosed with hypothyroid. My tsh is 150. Ive been started on 50mcg of levothyroxine 9 days ago. how quickly will it either work or i can go back to ask gp to raise dose. Im supposed to be going back to work and shes only signed me off for 2 weeks had no improvement. I have no idea how im going to cope at work.