I was diagnosed with Hasimoto's in April. My levels are not too bad I have been told, except my antibodies which are high but I feel shattered most of the time, even in the morning. I was given Levothyroxine in April, 50 mg and felt amazing, I had energy to cook after work and even go out for walks with my husband and dog! Then my dose was increased to 75 and I went gluten free at the same time. I started to lose some weight but then my tiredness returned and my t4 started to decrease. Then my gp increased Levothyroxine to 100 about 3 or 4 weeks ago. I feel really tired, I'm also noticing my jeans are getting tighter. Is this normal after feeling so great when I started thyroxine?