Pre molar extraction healing

[Siobhan]

Hello! I know this has probably been asked before but Ive just had my two upper pre molars removed. No pain the first couple of days, aches started the third day but disappeared with meds prescribed by dentist. My question is how should they look when they're healing? One side now on the third day is still a bit of a hole with some grey stuff in it. The other alarmed me a bit today because it seems to have come down in line with the tooth in front of it and is also the grey colour. It just looks weird! Still on a soft diet and doing salt rinses each time I eat. As I said, no bad pain but taking anti inflammatries to bring down any swelling. Thanks for any advice