When my husband and I go to visit his hometown, we usually stay at his friends house. His friend has 3 cats, and I'm very allergic to cats and every time I stay at their house I feel like shit. I cough, wheeze, sneeze, my eyes and nose are itchy, it's hard to breathe and my nose is stuffy. It's not pleasant and I find a hard time enjoying myself when I'm there as a result. 

I try to take allergy medication; today for example I took a 12 hour claratin and then a while later when it didn't help I took a 24 hour claratin - but still nothing. I even went and sat in my car for ~45 minutes, which helped a little, but a few minutes after I went back inside everything got worse again. I've stayed at their place several times now, and this consistently happens every time I'm there.

So, WIBTA if I tell my husband that I can't stay with his friends anymore when we go to visit his family? 