I had two wisdom teeth extracted 11 days ago. I had barely any pain, no swelling and I feel fine. I have kept the sockets clean but rinsing with salt water as well as a syringe of salt water on lower extraction site. I noticed today that there is a green mass inside the socket/ looks like the size of the tooth that was pulled. Originally it was dark red(clot) then became slightly white- and now green. Again I have no pain, swelling and feel just fine. What could this be? I thought maybe food was stuck but it's not the color of any food I've eaten and it's not becoming dislodged with use of the syringe or rinsing.