How will i be able to tell if i have a wisdom tooth blood clot?

White: You may see a whitish substance in the socket. This is similar to a scab that turns white if you take a bath. If there is no clot, you have dry socket and it will be immensely painful. If you feel you are having complications, see the dentist or oral surgeon who removed your teeth for a follow up.

You would : Definitely know if you didn't because you would develop "acute alveolar osteitis", commonly known as a "dry socket" which is exceedingly painful and most often starts 24-48 hours post-op (if and when it does). So, simplistically, if you have no pain, you have a clot (which is what occurs most of the time).