Hi. Read your history of a sinus infection and taking Amox for the same. You say, Decongestants cause you agitation ; you can certainly take nasal/topical decongestants like xylometazoline 4 times a day followed by steam inhalations. I would further advise CT scan of the sinuses to see exact problems and plan for surgery if indicated as per the CT diagnosis. You may need an additional or change of antibiotic, anti-inflammatory medicines, probiotics, multivitamins for early recovery . I hope this answer helps you.