Ranger, do the symptoms you described sound like any of the Candida symptoms you experienced before? The alcohol in the bitters usually isn’t enough to make a difference especially when you use only half a dropper full a few times a day. You may be allergic to one of the herbs in the bitters.
If you want to, you can try the “Sweetish” or “Swedish” bitters (products with either name are available) and look for the glycerin based instead of alcohol or ethanol.
And yes, the Candida produces ethanol.
Really sorry you had to go through that today.