I'm so sorry you're dealing with this, as its something I've been coping with for a few months now. If your symptoms are anything like mine, they're just as easily explained by anxiety and reflux. Bulbar als is super rare, it's unrelenting, and from what I've learned, an ENT or a Neurologist can tell very quickly if you have it just by listening to symptoms.
That being said, I get it. It's scary not knowing what's wrong and having this glaring, scary illness starting at you and thinking... wow, my symptoms make sense. Keep up the faith, and consider seeing a therapist. I start today :)