Should I move his appt up?

My sons 9 month appt is on the 20th but he seems to be sick with a cold. Will not nurse or take a bottle, pulls on his ears constantly, has had discharge from his ears, has had diarrhea for 3 days straight, extra whiney and it looks like his top two and bottom two teeth are coming through. He hasn’t been sleeping well either. Would It be reasonable to ask them to move it up if possible? I would hate to wait any longer if he has an ear infection. I’m also worried about him getting dehydrated.