Just diagnosed hypothyriodism

I was just diagnosed with Hashimoto’s hypothyroidism in January. I have been on the synthetic cinthyriod (.05 mg) since then. Since I am still new to all of this I am wondering about symptoms I am having now, if they are related to the hypothyriodism. I am still exhausted all the time and I recently started having memory problems. I am noticing that I am having times when I lose my train of thought. I completely will forget what I was going to say next and what my point was! (so what was I talking about? Just kidding:P )
Ok so I was fine about always being tired until the medicine gets regulated, but I am worried about this memory thing. Especially since I am way too young to be forgetting this much. I called my endocrinologist is not concerned since my TSH levels are ‘normal’ (2.93). So, is all of this ‘normal’ for the beginning stages of hypothyroidism?

Thanks for all your help!