Regular use of decongestant nasal drops will aggravate your problem. Please don't use them.
Next Steps
If problem persists try to visit an ENT specialist for examination of the nose
Health Tips
You can try practices like jal neti. Also try to find out any reason for hyper responsiveness of your nose for eg - any fungus on walls/ seepage/ pigeon dropping/ pet hair/ dust/ direct blow of ac or fan in your room. Try to eliminate the cause if you identify any.
Also exercise for 45 mins daily.