Re: thyroid cancer and pregnancy
I would either get pregnant now (if you want a baby within this year), before the RAI, and do the RAI sometime later after the baby, or wait a Full Year After RAI, depending upon your dosage.
My blood counts were low for a year after RAI for thyroid cancer, and there have been studies that confirm this occurs, so I think it's a good idea to wait. Your other risks are from having radiation in your body. Obviously, radiation would be bad for a developing fetus.
It also really takes time for your body to recover, and to get regulated on a good dose of thyroid medication after RAI. I think waiting is the safest for you and your baby. I agree that focusing on this now, will enable you to focus totally on your family later.