Allergies

I recently found out that I am pregnant, I have a doctors appt. next week and I was going to wait to ask my doctor then but I've stopped taking my allergy medicine for now. Unfortunately, my allergies are horrible and I am sooo miserable! Anybody know if it's okay to take zyrtec in the first trimester? Some websites say it's okay and some say it's not! Of course it's the weekend so I can't just call and ask, otherwise I might just have to wait to ask on Monday but I'm hoping not to be miserable all weekend!