Please go to mayoclinic.org and put in your symptoms. Also, if your insurance allows it, please go to an Internal Medicine clinic at a University Hospital clinic. There are so many causes for your symptoms, that one thyroid test should not be the end of a proper diagnosis and treatment. One cause that comes to my mind is that your neck problem is irritating your Vagus nerve. I personally know that when I put my neck in certain positions, I get heart palpitations and nausea. Many Decades ago, when I was a teen, I was seen by an old, uncaring, doctor who, after a few blood tests, declared me a depressed teen who needed to talk to a psychiatrist about my teen problems and take medication. The only way for a person to find out any medical information was to go to the public library and ask to see the medical book called the Merck Manual. It is how I diagnosed and saved myself. Now most people can help get the proper diagnosis and treatment by using legitimate websites.
Advocate for yourself, and inform yourself of possibilities for the doctor to consider.