Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you today.
Any retching, gagging, lip licking, drooling, or vomiting?
Any change in his thirst?
Are his gums pink or white/pale? Moist or sticky?
If you press on his belly, any tensing, tenderness, discomfort, or pain?
Any issues passing urine?
Could he have eaten anything harmful (ie bones, toys, plants, chemicals, human meds, etc)?