Again, even though the sleep study was normal, weight can make you breathe with more difficulty esp. when lying down, when breathing is most difficult. It can also cause/worsen reflux-like sensations that may make swallowing more noticeable. Reconsidering your diet esp. before bed can only help.
Tongue twitching is more likely allergies, dehydration, and/or anxiety than anything.
You don't have bulbar ALS, or any ALS. If it takes an EMG to get that across, go get one. But your statement that ALS is a big fear because not getting answers is characteristic of PALS during diagnosis is just nonsensical and if you dole out advice for a living, I would think you could see that.
So clearly your perspective is clouded, and if you need better counseling, get that too. Those here who are, in your words "just waiting for the next body part to stop working" cannot help you the way that you must help yourself.
Best,
Laurie