Went Off Of Cymbalta And My Doctor Put Me On

Went off of Cymbalta and my doctor put me on Wellbutrin. Started taking wellbutrin14 of this month. I have try to stop taking Cymbalta because last time I went off of it I'm having the same exact symptoms as I'm having now I feel like I can't breath and I'm panicking last time I went to the doctor they gave me anxiety pills but I was not taking Wellbutrin, I still have some anxiety pills from 2014 hydroxyzine would it be OK to take one of these anxiety pills tonight so I can get to my doctor in the morning.