Bloody pimple? Bacteria plug up?

I had this really inflated pimple that just didn't see to pop. BeCause of all the stretching and Stress put on it, it formed a sort of scab. I came off cuz the skin around it dried up and then the hole in the pimple bled alot. Is this just bacteria that was plugged up or is it bleeding cuz of the scab? My pimple is alot less inflated after it bled