Keep in mind, Romina, that people who do not have thyroid problems can have insomnia. Insomnia is so common when we are hyperthyroid that we do cite it as a symptom of hyper. But it is not necessarily common to have insomnia while hypo, so it isn’t (to my current knowledge) listed as a symptom of hypo. Our sleep does sometimes get disturbed while hypo, by muscle cramps, which are a symptom.