Up with Oliver; he had a very strange looking bowel movement earlier in the evening, almost pale…

Up with Oliver; he had a very strange looking bowel movement earlier in the evening, almost pale white/gray/yellow. Was not complaining of any discomfort, etc. He woke up at about 12 am, crying, in pain (claims stomach and ear), threw up. He feels a little warm. I've been trying to get him to let me take his temp, to no avail. He has calmed down for the moment, but wondering if I should wait to take him to his doctor tomorrow, or if this warrants an ER trip, in the event he doesn't a) fall asleep, or b) doesn't seem to be improving. Thoughts? My poor sugar doo. 😢 I'm worried. He seems to be drifting off, now.