I go my wisdom teeth removed surgically in hospital about 5 days ago and one of my stitches fell off and their is a hole where the tooth was, do i nee?

Hard to say : Needs examination by the dentist or a doctor. Sometimes they can leave it and sometimes it's better to have it reclosed to reduce dry socket problems. Seek specific advice from a professional

Wisdom Teet Post -op: Good day; After 48 hours you may rinse wisdom teeth extraction sites; but try to be keep them clean.The clot is forming and you do not wish irritants to undermine the process. Initially a chlorhexidine mouth wash is helpful: gradually begin massaging the as the area heals.

Oral Surgeon: That's a decision for your specialist Oral Surgeon to make, not someone who does't know your case or the extent of your surgery. If surgeon used reservable sutures this may be part of his/her treatment plan. If not, suture may have to be replaced. Please call Oral Surgeon's office for appropriate instructions.