The nausea will pass but it will take awhile. I had 341 RAI and was sick as a dog for days and the nausea lasted for a good 2 months before it started to subside. There are nausea wrist bands that you can purchase at most pharmacies. They press on the pressure point in your wrist and I found that they helped a great deal as well as mint candies and gingerale. The wrist bands are used for sea sickness as well and they are just stretchy cloth bracelets with a knob on the inside, it is important to position the knob in between the tendons on the inside of your wrist, there are instructions in the package. Good Luck.
Cindi
I had horrible nausea after my RAI...you are not alone! It passed quickly for me (partly due to the anti-nausea meds the doctor put me on), and I wish the same to you. Best of luck!
Give the Synthroid time to kick in. Your nausea is from both being hypo and the RAI. I didn't get experience the nausea until I went home from the hospital after RAI. So some three days later. I didn't start the meds until almost a week later. It does get better. The nausea is just a phase. Not a long one, but a phase none the less. I took Zantac and it helped all along until just after I got home. Then I wished I had some anti-nausea drugs, but it subsided almost as quickly as it came on. Just hang in there. Good luck.