I'm 27 and have congenital hypothyroidism. I just know something is not right despite all levels within normal parameters. I also take beta-blockers due to having palpitations. I wondered if it was anything to do with my thyroid or maybe something else. Just over the last few months my temperature won't regulate Im always cold until I carry out an activity or go to bed then I'm drenched in sweat. My sleeping pattern is a nightmare and falling to sleep can be very difficult some nights. My moods are all over the place, sometimes it can take a tiny thing to make me highly irritable. Don't like feeling like this. Any ideas any one??