Ive recently had a bad sinus infection - but have been clear of most symptoms for about a 10 days.  Beginning 2 days ago, Ive been experiencing airway constriction that has led to difficulty sleeping and apnea-like reactions.  This came on suddenly and usually only bothers me at night.  However, now on day 3 of this, Im started to get concerned.
Hi Dear, Welcome to Chat Doctor. Understanding your concern. As per your query you have symptoms of sinus infection at night which are pointing towards condition called sinusitis. I would suggest you to take steam 2-3 times a day to relieve congestion, Chat Doctor.  You can also take ibuprofen (if not allergic) or acetaminophen for pain and swelling. For allergy take over the counter antihistamine 