Suggest Cure For Persistent Soreness And Terrible Odor In Nose

I have a lot of allergy/sinus problems. I have chronic postnasal drip. I take Singulair on a regular basis. I also take Benadryl, Zyrtec, Sudafed etc. About a month ago I was diagnosed with a sinus infection and was given a nasal spray along with other meds. My nose got really sore, (up inside) so I stopped using it (thinking it was the nasal spray) but now about a month later it s still sore! So sore, I can barely blow my nose and at times I smell a terrible odor??? I ve tried a sinus rinse and everything!! I don t know what else to do! It s so embarrassing and it s very frustrating!!!