u/Gingerbreadtoast

My 6yr old toy aussie/male/6lbs is displaying signs of lethargy. He is not being himself at all. Still responsive and eating but he seems low energy. I suspect it is dental related as he is showing signs of pain when I touch the right side of his face. There is no swelling but his demeanor is worrying me. I would take him in to the emergency vet but we are an hour and a half away from the nearest one and I have already woken him up 3 times in the last 2 years and I really dont want to do that to him again. I will absolutely do it if its an emergency but I am not sure whether or not it is