I am 99% sure I have asthma. A few minutes ago I started obtaining sharp pains in my chest, and now my breathing has worsened. I have a physicians appointment tomorrow to get confirmation that it actually is asthma (if not some thing else)
But, as of appropriate now I need one thing I can do for tonight that can aid my breathing.
Answer by Thomas
More than the counter Primatene Mist inhaler. They are around $ 20 but breathing would be worth it.
I know you mentioned with no an inhaler but I am thinking you meant a prescribed one.
Answer by Steven L.
go in the bathroom, close the door, and turn the shower onto full heatbut dont get in, just breathe the steam.
Answer by girliegurl
calm yourself. the far more you worry the worse it will get.
lay down and dont run about to much!
or get a small fresh air if the property is stuffy but do not run about to a lot or it will worsen! i think you may be in a position to get an inhaler from a 24 hour pharmacy but I’M NOT Entirely Positive! sorry i hope this helped a little! 
depending on where you live in the world if you have cool nights then at night it always helped me get through the night to go sit outside and just breath the cool air. also going for a ride in the car with the air conditioner on. Or make it cold around you turn a fan on you or cold shower but don’t get in just breath the cold. hope you make it through
go to the doctor?