Seeking advice on muscle pain and drooping eyelid

My PCP has referred me to a neurologist next month because my eyelid will intermittently droop and my vision will blur, and after a while it goes away. I've also been experiencing choking and coughing while eating pretty frequently, and muscle fatigue and aches. My bloodwork came back negative on the achr and anti-striated muscle tests, so they're already dismissing my symptoms as needing more sleep and reducing stress. I was wondering if anyone with a diagnosis out there can tell me.. do your muscles hurt, like burning and pins and needles, when you do repetitive motions for too long? (for example, marching in place or washing dishes).