My son had peritonsillar abscess and the doctor lanced what he thought was an abscess, nothing came out. Was put on antibotics and it went away, now 3 to 4 weeks later there is like a hole in the roof of his mouth and when he opens his mouth he can make it ooze a creamy/brownish puss. What would this be and can it be taken care of. His tonsils are very swollen and inflamed. He is 22 yrs old.