I gave birth a month ago and I've got an itchy rash come up in a patch on my leg and thigh, it's like largeish raised bumps and itchy. I've googled it and it looks like hives. I've never had hives before and I don't know what's caused it, as I'm not allergic to anything that I know of. Could this be a hormonal thing? And any other suggestions of what it could be other than hives? Thank you