I have a sinus infection. been taking an antihistamine and decongestant. why does my nose feel like i sore red cheyenne pepper? what can i do to stop

You may : Need topical antibiotics eg neosporin ointment or Bacitracin and apply to the sores in your nose three times a day for about 5-7 days. This should heal up the wound / sores inside your nose and feel good as new! if no better, schedule to see your doctor or ear, nose throat specialist

Antibiotics: If you truly have a sinus infection, then you will need an antibiotic. Infection causes inflammation of the nasal tissue and thus the soreness and antihistamine/decongestant does nothing for an infection. Some times saline nasal irrigation may help but probably not in your case. See your doctor.