[Ashley V]

I was changing my clothes and my husband was like "What is that?" He saw a spot on my lower back. I turn to look at it and I have no idea what it is and it's got me concerned. In the center it's a bump like a pimple, but the tip is BRIGHT red like it has been bleeding. All around the bump is a dark purple-ish red bruise like color. The spot is about the size of the end of a AA battery. Anyone have any idea what this is?