If it's still a reaction, go back to your doctor. Some reactions do need more treatment, and whether that's what this is or not, the doctor is the person you need to talk to. I'm *not* a doctor, but I have had lots of allergy reactions over time, of varying kinds, and have needed a wide range of interventions. So if it is a reaction ... you need more medical help, and a doctor can do that (steroid shot or things like that). If it's not an allergic reaction after all, the doctor is still the person who is your contact point for your health concerns, and this is something you want in your file, right? Hives are not always a bad thing, but it's bothering you, so it needs to be dealt with, or documented, or whatever. And consider this ... if you are reluctant to go back to your doctor for this, is he the right doctor for you for anything bigger?

Folks here can't give specific medical advice because, as Christine wisely pointed out, every single human is different. Even if we were doctors, it would be bad practice to do so over the internet, anyway. But we CAN point you back to finding the specialists and trusted physicians in your area who will support you in your journey, and we can cheer you on from here with whatever it is you end up dealing with.