I've been having hives pop up overnight for the last few days, today makes 4.. I haven't tried any new foods, soaps, lotion or clothing the last few weeks. I've checked my bed for bed bugs, nothing! My husband doesn't get them & neither does our 2 year old that occasionally climbs in bed with us in the middle of the night. I've read that it could be related to the menstrual cycle, not sure why that would cause hives.. My period is late & haven't tested yet but don't think this would possibly be pregnancy related it I was. Any help would be greatly appreciated!!

The little scab marks are from itching hives from the days before..