If you'd like to check your hormone levels, do an Extended Female Hormone Panel from Diagnostechs Labs. It uses saliva collection over a 28 days cycle. That will give you your estrogen, testosterone, FSH, LH, etc levels.
Most Americans aren't deficient in iodine. Iodine
can drive autoimmune conditions and since you have had UC, you probably already have an autoimmune component or overactive immune component going on in your body.