So, the past couple of weeks, I have a very congested nose. The snot that comes out is either brown, gold, dark green, or a light green on good days. Also, I have had a almost constant headache. It s not migraine level, but it s is very annoying. Lastly, I don t have any allergies, but I do get migraines, and take medicine for it. Any chance it s something other than a cold?