I had my ppd test yesterday there is a red thing in it and I accidentaly shake my arm is it ok?

you had it yesterday it will look kinda red cause its done under the skin so when its been three days it should thin out and not be so red and bumpy it will at that point be negative if it gets a bump and it turns red then you might have a issue at that point they will do further testing its about normal for now thou cause thats what it looks like just after they do it