My daughter's ENT told me that we should expect her's to stay in for 12-18 months, and that they usually fall out on their own. He also has set up appt's for us to see him in May for a 6 month follow up. He stated that if the tubes didn't come out on their own in the 12-18 months, that they may need to be removed by the doctor. I would definitely get him in again as soon as you can. Also, I would suggest taking your son to another doctor, because although it is rare to have complications, you should ALWAYS have a follow up after any kind of surgery, and for him to deny you to be able to take your son for that is ridiculous. I would be furious if my daughter's doctor denied me of a follow up after I had requested it. And although some surgeries require you to just go to your regular doctor for the follow up, I can tell you from experience of having tubes for my daughter, that the ENT likes to see them after the initial procedure at some point.