hello, years ago i had a severley overactive thyroid . I am presenting so many symptoms of hypothroidism, but not weight loss i have actually gained weight. my question is can i get it back? but it present itself as underactive. my tests have come back normal. i feel so ill. tiredness, muscle fatigue , severe dizzyness amd my menstral cycle is 8 days very heavy flow and it can then come back a week later or no period for 6 weeks or more and diarrhea . I have no protruding eyes but my eyes are so sore and i have pressure in my right eye intermittantly. I also suffer from migraines. I had severe throid problems and took carbimazole but then got pregnant. I have suffered for the last 15 years and have now sought help but my tests have come back normal. How can my thyroid be normal after pregnancy as i was never tested again after that so i just got on with it. I have has so many symptoms over the years and i was thin then so its not weight related