They might, but a study shows 99% of women will not experience this in pregnancy. I've read a few of your posts, and it almost seems as though you're looking or attempting to use any sign or symptom and see if it might be pregnancy. (Not trying to be rude in the least, so I hope you don't think that) Ignore symptoms and signs because they truly mean nothing. Have a doctor do a blood test. It's the only way you're going to know anything. Good luck.
I would be seeing a doctor I have never heard of hives during early pregnancy
Hives is typically an allergic reaction to something.