Can anyone relate??!!??

So I have a thyroid condition called Hashimoto thyroiditis. I take levothyroxine for it but the medication is causing me hair loss. I was placed on synthroid instead and my hair grew back but I can’t afford synthroid. My insurance only covers the generic brand. Even my doctor told me that the generic brand can cause hair loss. I don’t know what to do to prevent it! Can anyone relate at all even slightly? Or have any tips? I want long hair but at this rate I’ll probably cut it all off short.