What Casues Horse Voice,difficulty In Swallowing,dry Skin,brittle Nails And Thinning Hair?

My Dr. has given me a TSH test which she says is normal. But I am cold all the time my voice is hoarse more often than not I have difficulty swallowing at night when I lay down (I have to hold my neck at a certain angle to feel comfortable), my skin is extremely dry, my nails are brittle, I'm losing my eyebrows, my hair is thinning, I have joint pain throughout my body (I have been diagnosed with arthritis), I tired all the time (without exertion). I have a lot of pain so I have not been sleeping well for years. I am constantly gaining weight. There is no obvious swelling in my neck, but sometimes it is hard for me to swallow. Do you think this could be caused by my thyroid? Are there any other tests that could rule this out. Thank you for your time. Treaser Brown