Hello and you have my best wishes for feeling better quickly. My understanding is that it takes a number of months to see a difference in how you may feel. I was told that the body gets used to being Hyperthyroid and it takes it’s own sweet time becoming adjusted. Personally, I noticed feeling better within 9 months to 1 year after the Radiation Iodine Treatment. That being said though, I am still not myself after 2 years. This is probably different for each person. I do wish you a speedy recovery.