Hives while pregnant ??

so I’m almost 5 weeks pregnant and for the past almost 2 weeks now I’ve had really bad hives all over my body. Mainly on my thighs, stomach/chest, back and sometimes on my arms. I’ve been taking Benadryl to help keep it controlled. I haven’t been using anything different. Only thing different in my life rn is this pregnancy. I’m wondering is anyone else has experienced this ???