Hives after birth. Anyone have any advice?

I've ended up with hives. My skin is so itchy I could rive it off. I've been to the doctors and they've gave me a 4 days course of steroid tablets currently on day 2 I've used calamine lotion and been taking anti histamenes. Can anyone please tell me if there's an end to this? Did anyone else suffer with hives? How did you calm it? How long did it last? I'm desperate 😭😭