Looking for answers with my odd health condition

Hello! I’m going out on a ledge here and trying to see if anyone has any recommendations. Since end of April early May I have been having these odd hive/welt type rashes on my skin and within the last month my feet will get very swollen along with the rash and my hands/wrists as well. I also will get pain in the balls of my feet and the palms of my hand.

I’ve been to the doctor to be tested and they recommend that I see an allergist which I am doing I feel like it’s not allergies. I feel like it’s not allergies because the pain that I’m experiencing in my hands and feet and sometimes in my joints that go along with the rash. Tested me for STDs, tested my blood and everything came back normal and I don’t have STDs as well. I’ll attach some photos but maybe someone has a recommendation or an idea that I can bring to my doctor to be tested for.