We have had ddog for 2 months. She is 3 and we adopted her. Last week she was sick in the night but recovered quickly. This morning she's really lethargic. We think she's tired, as we are giving her more exercise than she used to get, and will skip the morning walk as she had a run last night. She ate her food this morning but she's got a gurgling stomach, tail not wagging and she just seems off. Any tips for knowing how long to see if she's just having an off morning, before we call the vet? As first time dog owners I'm not sure what to expect / look for and obviously I want her to be ok.