I Woke Up Two Nights Ago In The Middle Of

i woke up two nights ago in the middle of the night with stuffy nose, sneezing, and difficulty breathing. I was also wheezing and the wheezing and trouble breathing continued throughout the day and got worse at night. i slept with a humidifier and took an asthma spray. it was a little better but today i am still wheezing and now have a pretty dry cough where it feels like i ate something metallic and am coughing up metal taste. What should i do ?