2days after tooth extraction, the socket had yellowish slough on top, i cleaned with povidone and normal saline and it goes off. i found a small empty hole there. now, i'm suffering neck pain when swallow but no fever/sorethroat.what should i do next?

See: Please consult with the dentist who actually extracted your tooth. It is his/her responsibility for post op evaluation and aftercare until healing is adequate.

Yellowish slough: You may have disturbed what was a normally forming clot. Please check in with the Dentist or specialist Oral Surgeon. He/she may want to see you for a post-surgical reevaluation.