So I've been getting these bumps on my feet, they look like blisters, itch like no other, sometimes…

So I've been getting these bumps on my feet, they look like blisters, itch like no other, sometimes it's a solo bump (picture will be in comment) and sometimes they're kind of in clusters its been 2 weeks of them leaving and coming back and I'm so lost to what they are! I have a doctors app the 27th and I dont feel they are an emergency.They are just on the bottom of my feet no where else. They remind me of when I get poison ivy only I'm 100% sure it's not that. Any idea what they are or suggestions in care would be great but even if they are gone I'm talking to my doctor about it cause it's been really annoying and soo itchy!