Had bottom right wisdom tooth removed with some bone on 8/1/18. Seeing a black "clot" looking thing on the cheek side of the incision. Is that normal?

Normal. Probably. But you're asking a computer contact rather than your surgeon, the person that knows your situation best. Post-surgical care is part of the service that you have paid for. Call your Oral Surgeon. He/she has had this question before. He/she may want to see you or just give you the appropriate advice. Call now.