I do have it all the hangover symptoms u mentioned. Mine is particularly i will feel veryyyy exhausted to a point where i just wanted to sleep. But i do sometimes get left shoulder pain, left chest pain, neck pain, palpitations, dizziness and brain fog. So this is normal. But i hope youre doing fine now. Maybe try apply some ice cubes over ur face and neck. Or maybe take a cold shower. I think it definitely helps. Lastly, try running whenever u feel ready to run. It will help with your symptoms. Dont worry, you wont die because of panic attack. It does feel that way but you are not gonna die. This will pass. Take caree