I started on 50 MCG of Levothyroxine last late May, due to a slig...

I started on 50 MCG of Levothyroxine last late May, due to a slightly underactive thyroid. The sides effect I am experiencing that is troubling me the most is that my hair is thinning dramatically. No bald patches, just thinning, and I had thin hair to begin with, so that makes it even more bothersome. I've also noticed that hair has completely stopped growing on my lower legs and upper thighs, and my eyebrows have thinned also. According to my doctor, my latest blood tests indicated that my thyroid levels were in ideal range now, and thinning hair isn't a side effect of the levothyroxine. I've read that it is, unless my thyroid levels still aren't ideal..and the levothyroxine is making my hair thin more than usual when in conjunction with the hypothyroidism. I'm also taking 25 mg of toprol to control tachycardia. If anyone could give me some advice, I'd really appreciate it! I'm at my wit's end as it my hair.