My 1st female puppy had a slighty yellowish eye booger one friday when we came home from work. Wife was a worrier who ran to dr herself at the slightest hint of personal trouble and tended to view the dogs the same way. So she starts worrying and wants to take female into the vet on sat am. Akita shows no other symptoms whatsoever. All is normal except the eye booger.
So we waltz into the vet on sat, vet takes one glance at her and says "she has parvo". Stunned. Totally. No Way. Parvo is a KILLER of puppies. She hasnt left my fenced yard and has gotten ALL shots on time. I'm not stupid and know more than most dog owners about disease and medicine and this dog IS NOT SICK. I live with her. I know.
But I had an excellent vet who I trusted and he described what she would go thru in the next week and my options. He said it was one of the earliest cases he had seen. To shorten the story, he was right and I nursed her thru it, waking her up every 30 minutes at the worst of it to hydrate her with a turkey baster of pedialyte solution. I asked him months later how he could make the diagnosis based on 1 quick glance and no bloodwork or other physical exam and he said "it was running epidemic in the area, so it was easy". Not word 1 in the papers about a parvo epidemic.
See your vet more often than you need to. You might learn something important.
(BTW, he also said that knowing our lifestyles and precautions, it was probably a passing wandering cat(allowed to run loose in violation of the law) that dropped off the parvo virus into my uncontaminated yard. Those of you that know me ......)