Sinus Pressure, Headache, Dizziniess

I feel like I am going crazy here. I have this constant pressure in my forehead and have tried all kinds of otc meds and nothing works. Of course the pressure gives me headaches and I am constantly taking excedrin, tylenol, etc. For that. I also have a bit of dizziness, more like a lightheadedness similar to having perhaps a few too many glasses of wine that will not go away. I don't experience a clogging of my nose and can actually breathe freely through my nostrils and thankfully I don't experience the sinus pain attributed to infected sinuses but just have that constant unrelenting pressure I mentioned earlier.

Unfortunately I am one of the lucky people without health insurance and feel like I have to just "deal with it" for now. Has anyone experienced these sorts of symptoms before and can you recommend any herbal remedies? I suppose i'll have to "bite the bullet" to see an ent but that can be expensive without health insurance. Please help! Thanks in advance!!!