赶快看医生。如果是我，试着严格不吃面食2-3个星期，试试看，反正没多少害处。

不是医生，这方面不懂的地方太多。如果确诊是甲状腺低，可以参考一下，A concise review of Hashimoto thyroiditis (HT) and the importance of iodine, selenium, vitamin D and gluten on the autoimmunity and dietary management of HT patients. Points that need more investigation.  http://www.nuclmed.gr/wp/wp-content/uploads/2017/04/10.pdf