But unfortunately not new to having underactive thyroid. I was diagnosed when I was 21 with immunothyroidism now almost 24 years later am on 175mcg was 200mcg 3 months ago. Latest bloods tsh19 I feel washed out and fed up. I am trying to get to see a specialist as I have been told I am peri menopausal and am salicylate intolerant (an immunology linked). My area does thyroid register.