I am not sure whether this is a cold, sinus infection or allergies. Thus... here are my suggestions.
** COLD, SINUS INFECTION **
The best remedies I have found are taking Dayquil (day) and Nyquil (night). I take the dosages every 3 hours to assure they are not out of my system. (This helps with the stuffiness, constant runny nose, and hazy feeling in the head.) Second, I suggest taking Mucinex every 10 hours. It states it works for 12 hours, but I can feel the effects wearing off before that. (This will help reduce throat congestion, chest congestion and open your throat up to breathe better. It helps reduce coughing from phlem.)
I might also suggest taking Vitamin A, B, C, and D. Vitamin C helps you recover from practically anything. Vitamins A and C work together to help process C and promote healing and wellness. B helps your body recover from mental and physical stresses. (I take B when I am PMS'ing, feeling worn down, stressed from a rough day or when my body is feeling stressed from being sick.)
** ALLERGIES **
My God-send medication is Zyrtec-D. I absolutely will not go without it. For me... It helps reduce the watery eyes, itchy eyes-nose-face, reduces swelling in the face, opens sinuses and reduces the sinus pressure (which causes headaches), reduces the throat congestion from phylem. This works for in-door and out-door allergies. The "D" on the end of Zyrtec indicates there is a decongestant. They also sell Zyrtec without the "D" decongestant.
This works a million times better than Claritin, Allegra, Sudafed, etc. Some people use nasal inhalers-sprayers. I personally do not feel the effects that much. Nasonex and Flonase are good nasal inhalers. I think they work well with less effective allergy meds such as Sudafed or Claritin as a combination approach to allergies.
I think they target different parts of the breathing passages. If your problem is more towards the front of the nasal passage, then I think Zyrtec or Zyrtec-D will work fine. If you have a lot of swelling in the sinus passages going down the back of the throat, then you may need the additional inhaler/nasal spray.
You might also try a saline solution to squirt in the nose and let it drain out. Some people create their own solution: use a pinch of baking soda and a tablespoon of salt dissolved in about 4-8 oz of warm water. Mix. Use a bulb (like you see used on infants) or a medicine dropper to squirt it up the nose, let it drain out. DON'T USE JUST WATER< AS THAT WILL BURN LIKE THE DICKENS.
--> Also, I have found the generic meds and vitamins available from the drug store, grocery store, Wal-Mart and Meijers work just as well as the name brands. Might as well save a few bucks.
--> I use the same sort of remedies on my kids. It gets you back in the swing of things pretty quickly. You will feel a dramatic difference with the allergy meds in about an hour. The cold remedies usually give some relief within 1-2 hours. If the cold is really bad, it may take until the 2nd dose to feel the full benefits.
Good luck!