Why do I wake up every morning with one sinus completely clogged and one nostril filled with dry "stuff"?

Sinus or Rhinitis. Probably have chronic sinusitis or rhinitis. Try nasal decongestants (first use nasal saline solutions and rinses) also antihistamines. Decongestants in pill form or sprays ( afrin, neosynephrine, dristan etc) only if no hx of uncontrolled HTN or coronary disease ( angina, recent heart attacks). Try nasal steroids by prescript.( or p.O. Steroids). See ENT to r/o nasal polyps and deviated septum..