Ayes tee

Hi, I'm an 18 year old female. I might be worrying too much but until recently I was healthy until 3 weeks ago when I started having breathing problems with severe chest pain. Diagnosed with bronchitis, later with acid reflux after swallowing problems and constant popping in throat upon swallowing, i had momentary relief for maybe 5 days before I started having severe headaches, accompanied sometimes by a stiff neck and backache. Panadols had little effect. I also have a numb, tingling sensation in my head, especially when I press it. Pressing also results in pain and my scalp is very tender, and so are the roots of my hair. Trouble breathing and swallowing are also back, as well as a feeling of a lump in my throat, and now I have difficulty focusing and looking at things. I also experience blurry vision at times and tinnitus at least once a day. Along with this, my limbs feel weak and I'm a bit unbalanced, plus even slight exertion like a walk winds me and causes chest pain. Could these symptoms mean any kind of neuromuscular disorder? Or an autoimmune disease? I'm hoping that maybe, just maybe if I get testing done I'd be detecting it early. I'm really scared ande any help would be greatly appreciated.