Breaking out in hives

I’m nine weeks today and have been suffering from daily hives since a few days after I found out I was pregnant. My doctor has me taking Zyrtec to combat them which usually helps but sometimes doesn’t. I’m not allergic to anything and nothing in my diet, soaps or skin products or anything in my life has changed besides pregnancy. I didn’t have this with my first pregnancy. There’s some information about pregnancy hives online but I would love to hear someone’s personal experience. Am I really alone in suffering from these itchy awful welts I’m getting.