Hello. I started taking 25 mcg levothyroxine two years ago when I felt lethargic and my TSH came back 9.8, 0.45-4.5 being normal. At least three people in my family have thyroid issues also. As it built up in my body, I felt immediately better. However, I never went for follow up blood tests because I have vasovagal syncope and dread having them done as a result. I just go with how I feel, and since it's a lowest dosage and I feel fine, I'm assuming there is no need to adjust. In the first few weeks, I actually felt I had too much in my system because I had trouble falling asleep and had similar hyperthyroid symptoms. As a result, I've been skipping a dose on Sunday for months now. Am I causing problems down the line doing this?