Did you wash it real good to get any of the urushiol oil it left off of you? Be sure to do that. In fact, I'd shower and scrub yourself down well with a washcloth to get all oils off you anywhere it might have touched you. Get the clothes and any socks off you were wearing and wash them. Wipe down the shoes well in case the oils touched them, too. I don't know what your doctor could give you if you call them tomorrow, but sometimes chilling itchy places (the freeze it method to reduce inflammation) help me with mosquito bites (I'm allergic to MOST insect bites). Use a frozen gel pack or a regular zip-loc ice pack and keep it there as long as you can stand it. That often reduces allergic itching for me. Here's an article with some sound advice:
https://www.healthline.com/hea...