Since last 3-4 days, only at night when I switch on ac, I feel horrible chest pressure. Last night I was unable to sleep till 5 am, deep breathing results in cough with a very bad taste. Wheezing also happens. Last night I could not breathe, every breath was taking effort. Every night post 4 am I get mild fever, after that fever I can sleep peacefully and when I wake up in the morning my cough is gone, and I can breathe very normally. This is happening for the first time. I have come to my home, where I do not originally stay, for vacations. We have 2 dogs.