I wake up with dry/bitter taste in my mouth, lump in my throat, and weak. I did have bronchitis, sinus issues. Just feel sluggish all day sometimes.

Need evaluation. Please call your physician for an examination. You need a more in-depth examination than just a few words on the computer. Your recent history and current status will have to be evaluated.
Vague. Hard to say, but if you are possibly plugged up in the nose, you may be mouth breathing, which can dry out the mouth, gum tissues, and the throat. I would recommend seeing a dr.