definitely! in a sinus infection the tubes which clear fluid from the ears can easily be blocked giving pain behind the jaw and below the ears. i have had these several times now and once the infection actually affected my jaw itself. make sure that you get on anti-biotics for the infection try saline sinus rinses (neti-pot or suchlike) an otc spray called "alkolol" (an ancient formula but it works wonders! ) last thing that i learned during my last sinus infection - do not use decongestants!
could having bad sinus/cold infection cause sensitivity in teeth and pressure behind jaw/ears.