I Am Currently Getting Over A Bad Flu Bug. Was

I am currently getting over a bad flu bug. Was dizzy and nauseous during the flu. Have been sitting or laying down for about 3 days now. Today, I'm experiencing some mild chest pressure/tightness and feel like I can't get a full breathe. I used my inhaler, which I use for exercised induced asthma. It seems to be helping a little, but I still have tightness and shortness of breathe. Should I wait this out or seek medical attention?