I am experiencing a lot of neurological and other symptoms. What is happening to me?

Hi doctor,

I am a 21-year-old male with a weight of 50 kilograms and a height of five feet five inches. I have extreme fatigue for few days. I have unbearable pressure in my head, behind my eyes and ears. I have neck stiffness lasting for 40 minutes. I am unable to move my head in any direction at this condition. I have an adverse reaction after taking food. Pressure gets build in my chest and left side of the neck. I am unable to move my left arm for an hour. After that, I have difficulty in breathing and my lungs seem to be heavy. I get shivers and shaking. Even doing slight exercise causes shortness of breath and chest pain for hours.

I have gastrointestinal issues with extreme gas. I get headaches occasionally. Sometimes, I have unbearable pain. Sometimes, I get headaches with confusion. It makes me feel uncomfortable. I am unable to do my work in an intended order while getting a headache. Sometimes, I have a headache that seems to torch my head and it lasts for hours. This headache causes radiating pain from the back of the neck to the middle of my head. Sometimes, I have coldness and tingling in my hands and feet. I get blurry vision along with it.

I get occasional muscle spasms. I have an occasional loss of ability to walk properly. Sometimes, I have numbness in my whole body. I have extreme anxiety and depression. I have constant headaches, ear pain, and occasional chest pain. Sometimes I have joint pain in my legs. I wake up unwell every day. I really want to know what is happening with my body. Currently, I am taking Fourts B capsules and Panadiene. I have done some tests like liver function tests with CBC and auto-antibodies.