Welcome in H.C.M.
I have gone through your query regarding sudden running nose and sore throat
and shortness of breath
You are most probably suffering from acute upper respiratory tract
infection,most of the time it is viral and self limiting, you can take any broad spectrum antibiotic, anti histaminics and decongestant nasal drops with consent of your family physician. I hope you will be O.K. in 5 to 6 days but unfortunately if it takes more time than to consult an E.N.T. specialist will be a wise step for thorough examination and treatment.
I hope your query is clear now.