They may suspect a few options and are waiting to be sure, while doing their best to stabilize you with the meds.

Hang in there....And keep in mind that a diagnosis may come as a "mixed" sort of judgement, as in xxxx with xxx symptoms as well.

My father, who was a PDoc used to say, everyone wants to know what IT IS. Sometimes it's a few things working together! You can have a rash AND the flu!

Please don't let this scare you, but there are sometimes not bright lines! But at least you will know what you're dealing with, and then can come up with strategies from there.

Your attitude seems SO constructive and open, by the way!