Insect bite? Maybe?!

I noticed a small area on the top of my foot that looks as if maybe I was bitten by a spider!. It's a very small area (about the size of a penny) and the wound itself (it's really more of a rash) looks like little tiny blisters!. I was walking in grass with only clogs on - does this sound like a spider (or insect bite)!? It doesn't hurt, it's not red, I don't have any other symptoms, it just looks like a couple of really small blisters!. What do you think it could be!?Www@Answer-Health@Com

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