Does a tooth extraction blood clot turn white and start shrinking by fifth day. not sure if its bone now or just blood clot shrinking into the socket?

Dry socket: If you are experiencing more pain, this can be dry socket or alveolar osteitis. Basically, when a tooth is removed, a blod clot forms where the 'hole' where the tooth used to be. Sometimes, the clot becomes dislodged and the nerves and bone underneath become exposed and cause pain. This is treated with pain medication and may need antibiotics.

Blood Clots: Blood clots do not turn white. If something is white it is not the blood clot.

Healing socket: If it is day five and you had a problem with healing and there was exposed bone, you would know it as you would have severe pain. Although a blood clot is reddish in color, food and tissue debris can accumulate at the top of the healing socket and appear white. You should be fine. Just follow up with your dentist for a post op check about 7 days from the time of the extraction.