Possible ink allergy. Please help!

Hey there. I recently had some shading done on my arm, as part of a sleeve. After a day or two, I noticed that around the edges of some of the shading where small white blisters, almost like whitehead spots. And it's very red aswell. Also, there seems to be what I think is puss coming from the main areas of the shading. Can anyone please suggest something? Have I done something wrong?