Allergies while pregnant

I'm 5 weeks and 2 days pregnant. Last night I got TERRIBLE allergies! I was sneezing non stop, and it was just torture. I went to bed and I was still sneezing, and my nose started to bleed. Since I just found out that I'm pregnant yesterday, I've scheduled an appointment with my doctor on Monday, but I'm still scared and worried sick about the health of my baby. Is my baby going to be okay!? What kind of allergy medicine can you take while pregnant?