

Hey, so I was wondering the common question of what type of bug bit me?? This rash? Has been present for 5 days now and I feel as though my arm was injected with a vaccine. Sometimes my whole arm hurts and other times only specific parts. This is all only in the left arm, the one where the mystery bug bit me.
I was participating in a campus clean up when I noticed a black mediumish size bug on my arm and softly flicker it off with my pinkie. I don't think it was a tick because it came off very easily and then landed on my elbow to which I shoed it off.
I am worried and confused because I don't remember what it looked like and I don't know if feeling like you're whole arm was injected by a vaccine is normal. Please help if you can! I greatly appreciate it.
It also had a softer pink edge in the 2nd day that started "spreading" a bit on the 3rd day, but by the 4th day that pink edge disappeared and o ly a bright red rash remains.