Postpartum hives???

Katie
It's been 3 weeks since my c section and for the past week I have been suffering from hives on my arms and legs it's absolutely awful and has put me in such a funk! I've been to 3 doctors and given so many creams to take and nothing I working ! My dermatologist perscribed me prednisone and I'm praying it gives me some relief so I feel like myself again! I was just wondering if anyone has ever experienced anything like this ! Please any help would be much appreciated ! 
This is just some of them ! Ugh