Pimple like bump on breast filled with blood and tissue?

I have a pimple like bump on the bottom side of my breast filled with blood and tissue. I thought it was a pimple and tried to pop it... Turns out it was just tissue and blood... It's bigger than a pen tip but smaller than an eraser. My dr won't be back into town till Monday and figure I would ask here first... Thanks.Pimple like bump on breast filled with blood and tissue?
Ewww...