Hi, I have Thyroid issues in my family and have had several symptoms of under active thyroid such weight gain , dry skin , itchy eyes, hair falling out, fatigue , sluggishness, and depression. I ve also noticed that I ve had difficulty swallowing and disgestive issues. I had the blood test (tsh) and it came back normal. Is it possible to have a normal test, but still have a thyroid problem? Thank You