I got this dark purple/red-ish pimple on my breast that looked kinda like a small boil, and looked like it was filled with pus and blood, and when i tried to pop it, (which I know i shouldn't have done) very little came out, it wouldn't drain hardly at all. Then today it looks like the pic below, so it's an open wound, but I don't know whether I should go to the doctor because it's so small. It is not sore, except when I touch it, it stings. I bet you guys will say "better be safe than sorry" but do you think it would go away on its own? i put neosporin ointment on it.