I had one of my wisdom teeth removed 9 days ago. last night there was a large amount of blood ( dark red, thick) pouring out from the site. is it ok?

See your dentist: Wisdom tooth extraction is a surgical procedure and is not completely risk-free. Pain, bleeding, swelling and infection following surgery is usually at its worst 24 – 48 hours after surgery. After that it should subside more and more every day and after 7 days stop. Your symptoms could be a serous problem. See your dentist or an oral surgeon for post-op appointment and treatment.

Not normal: What you are describing is not normal. "A large amount of blood" can mean different things to different individuals and needs to be evaluated by the dentist who removed your tooth. Call the office and ask to be seen. This is part of the responsibility of your dentist for normal aftercare until healing is well established.

Lost clot: sounds like you lost the clot and may be developing a dry socket.see an oral surgeon