If you had RAI a few months ago, it is way to early to say it did not work. It takes time and patiences. My thyroid took almost a year and a half to finally get stable. It died off slowly and I had to go through a number of dose changes.
Life will get better. Can you ask for help from any family and friends to give you a break every once in awhile?
That helps a great deal. We are only a click away.