I had moderate hair loss when I started taking thyroid medicine when I was 16. It was unbelievably traumatic for me and I did have bald spots. It eventually just stopped coming out but took a while to grow back.

I used to just cry and cry and cry and it got to the point where I didn't even want to brush my hair because I was afraid that brushing would pull out all the remaining hair. I'm so sorry that this is happening to you. If your doctor says that this isn't normal, find another doctor and get a second opinion. The first doctor that put me on thyroid meds told me that hair loss was not a side effect of the medicine, and when I switched to an endocrinologist he looked at me like I was crazy when I told him what the other doctor said and he told me that hair loss most definitely WAS a side effect.