i have had this cold on and off for about a month. i would get a sore throat then cough and then it would go away. then it would come back. i thought it was strange but i figured i was just getting a new cold over and over. then about a week ago i started to feel off balance, not like the room was spinning, just like slightly off center. i went to the doctor yesterday and was told i had a sinus infection. he gave me a 2 week prescription of ceftin. i was just curious if its possible to have a sinus infection without any pain. i always thought that sinus infections come with headaches and pain in the head. if anyone can help out let me know. thanks!