Hi. Six weeks is a very long time to be sick. Have they missed something like strep throat? Would they even consider doing a strep titer to see if you have strep running around your body (it's a blood test)?
Do you have an allergist who prescribes asthma meds to you? When I get a lung infection, my allergist always bumps up my Advair for awhile, like a couple of weeks. There's always increased inflammation during bronchitis or pneumonia and it helps.
They didn't even do a chest x-ray?!!! Okay, my advice? Go to an urgent care center. It's often amazing how different the care there can be. Tell them you "probably" have MG, are really weak and have been sick for that long!
While it hasn't been "proven" to help MG, having caffeine might help you a little! Caffeine is a cholinesterase inhibitor, just like Mestinon and you might not get a headache unless you withdrew from it.
No, you are NOT supposed to have surgery if you have been ill recently. Especially something affecting the lungs. I would speak to your surgeon's office about this right away. They may want to reschedule. The risk for infection increases. It is surgery and you do not want to have surgery if you have an infection.
Back pain could be kidney involvement!!! Make sure they do a urinalysis too. And throwing up under any circumstances is not normal. Have someone take you to urgent care! It's amazing how having someone with you can make doctors take you more seriously.
Even if they don't take YOU seriously, they should at LEAST be taking the condition you have seriously!
One more thing. If you have a pulmonologist, you should have PFT's done. Especially MIP and MEP. They show muscle weakness. It would be one more piece of "proof" that you aren't doing well. They can do regular PFT's at urgent care but not the full PFT's. And have them check your oxygen saturation; not only while sitting but walking around!!!
I hope you can get some decent help.
Annie