Tooth extracted 3 days ago. seems like my clot is sinking in. is this normal? i'm still in pain, but i don't think it's dry socket, which is my worry.

It is normal: Typically, symptoms for a dry socket develop 3-4 days after a tooth extraction. However, practicing good oral hygiene may prevent dry socket. If concerned, see your oral surgeon for post-op eval.

Retraction: Is a common finding but pain after 3 days typically isn't unless it was a complex surgical extraction. Go back to the treating dentist for an evaluation but also make sure there is no food impacted in the extraction socket. Gentle rinsing with warm salt water should be ok after 3 days. If the pain persists, it may be a dry socket.

Don't worry: You appear to be healing normally. If you are overly concerned or uncomfortable, revisit your dentist for a follow-up.

Contact: Pain should be demising by 3rd day. If it has not, as you have stated, call your treating Dentist or treating Oral Surgeon for a post-surgical evaluation. Additional treatment may be required.