With Hashimoto's but normal thyroid function, medication is not mandatory, but a trial of low dose levothyroxine (25mcg for example) may be worthwile. With the goiter/nodules, you may want to see an endocrinologist for consideration of biopsy and further advice.
Can you explain what might make thyroid nodules dissolve/disappear? I'm greatful that they have, however,I am curious. I stopped the normal course of meds... Levothyroxine, as I felt so horrible taking the meds. In doing so, I took Iodoral for a few weeks and changed my diet to include foods higher in iodine content (salmon, tuna, etc). I wonder if the change in my diet was more helpful than any of the prescribed treatment. Can you provide feedback on this and information on T4 type supplements??