Susan,
Are you sucking on hard candies? I pretty much always had either a sugar-free Werther’s, Jolly Rancher or Lifesaver in my mouth for a week after the RAI. The sore throat kicked in about 36 hours after I swallowed the pill, so I had cough drops occasionally instead of hard candy. I also found ibuprofen and Chloraseptic spray helpful with the sore throat. I slept a LOT that weekend. A. because I couldn’t go anywhere and B. because I had a lot of sleep to catch up on. For me, the fatigue has gotten much worse in the month (one month exactly yesterday) since RAI but I think that’s because I am now almost certainly hypo. I had labs yesterday and see the endo Wednesday, so hopefully he will confirm what I’m feeling. Try to rest as much as possible. I have had a lot of trouble falling asleep and staying asleep at night, when before the RAI I slept like a baby. I think the body can only tolerate so many changes, and right now it’s fighting sleep all day so when I come home and try to go to sleep, it continues to fight sleep. I’m confident it will get better, but definitely give in to the fatigue and sleep when you’re tired, get up when you’re not.