5 stars for the good answer. I'M HAVING A SWELLING FACE....?

I've been having a bad allergy with something(till now i can't figure out what is it) for a couple of days now.I had hives and a swelling face.The hives all my face are gone,but my arms still have like the little pimples,and face is still swolen..what should i do? And can i take a bath too? Cause i've heard somewhere that you can't take a bath or shower when you're having hives...????