Re: I don't know how to figure the lab results out.
With an enlarged thyroid with nodules, it is likely you might have Hashimotos thyroiditis, an autoimmune disorder common in women that can start out with hypERthryoidism (overactive) and eventually turn to hypOthyroidism(underactive). I would request thyroid antibodies to be run on your blood as well as a free T3, to go with your TSH and T4. Previous test results would be helpful (please post labs normal ranges too) to see how things have changed. An endocrine referral would be appropriate after these tests are back. A simple goiter (enlarged gland) can be caused by iodine deficiency, so be sure your salt is iodized. There is a "goiter belt" geographically in the US where the soil is iodine deficient, and those people are particularly prone to goiters if they don't use iodized salt for basic prevention.