so I had a cold a little over a week ago and after the cold, I've been getting a sinus headache every single day, usually pretty bad. It hurts under my eyes and in my back molars. I've been taking advil almost every day and I know I shouldn't do that but I can't just sit here in pain without taking anything...should I go to the doctor? I'm not even congested anymore, I used to think sinus head aches were from sniffling too much and having a lot of nasal congestion. Starting to get concerned. any ideas?