I have a similar problem. Except I had my top wisdom teeth removed by an oral surgeon. I already saw him twice already and one different surgeon and they both said the whole will close. I had a yellow smelly stain out of the hole and now it’s more salty taste and have slowed down a lot. But it’s been three weeks since the surgery and I just competed my second course of antibiotics. The ct scan showed my one sinus is full. Both surgeons said the hole will close which is according to them is like 3-4 mm. How did your situation resolve?