Spring Allergies

I'm having horrible allegies this year and I can't even breath through my nouse (I sneeze like every 10 minutes . Literally! )
But today I decided to work out anyway and even though I had to breath through my mouth (I now realize this was a huge mistake) it didn't feel any different from the usual (a little more effort but nothing big).
As soon as I got out of the shower I started coughing so bad. I could barely breath and when I do I sound like a cat meowing , my throat is super sore ...

I have no idea how am I supposed to work out from now on... Any sugestions?