10 PTS to best answer. Should I got to a Hospital or Ear nose and throat doctor?

Ever Since I Quit smoking cigarettes back in September, I have been using the nicotine patch with success, I have not had a cig in 4 months. ON the downside, I have been having a lot of weird things going on with my body. I sleep a lot more, also, I notice that my sinuses have become really blocked, I have resorted to using Over the counter Nasal Spray. I have become extremely fatigued and feel a lot weaker since I've quit smoking. It feel like it's a sinus infection because i have a constant ringing in my ears. Sometimes I wake up in the middle of the night with my sinuses completely closed so I can not breath. I have Medical Coverage at this time because My company changed hands and in that shift we lost a lot of our benefits!!!! SUCKS!, So this is out of Pocket. What would be the most inexpensive route to take to getting this resolved? Just go to a Hospital? Or should I just go to a ENT? Thanks!