Have already shared my thoughts that excess iodine can be an issue - and that information is available at the Yahoo Iodine Group on this subject. I feel that everyone would benefit from joining that group. You don't have to try to read all the messages. You can set your membership to read only at the website and then use the search function for posts on topics that interest you and read the files/databases.
Would also be beneficial to read the articles that have been shared here, as they cover many of these topics and answer many questions. I find it helpful to make a hard copy of the articles and have started a ring binder for iodine info.
Btw, age 30 is not too young for perimenopause and perimenopausal symptoms can be more severe than menopause. The reason for that is the relative changes in hormonal status - more than absolute levels of hormones - drive many of the symptoms, like hot flashes and night sweats. Perimenopause can last up to 15 years before actual menopause starts. Not that I am diagnosing. Just saying.
These symptoms of excess heat, sleep disturbance, dream change can be either excess iodine, excess thyroid hormones, or detox. Fun, huh? There's highly likely going to be ongoing detective work with iodine therapy. Choosing to avoid iodine therapy and to live with symptoms/disorder is not necessarily going to make the situation any better, easier, or simpler.