Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you today. I do apologize that your question was not answered before. Different experts come online at various times; I just came online, read about your situation, and wanted to help.
Again I do apologize that my colleagues could not aid you sooner. If you would still like assistance, can you tell me:
Has Rocky had any appetite loss, or changes to his drinking?
Are his gums nice and pink (not white/pale)? Moist or sticky?
Any breathing changes, vomiting or diarrhea?
If you press on his belly, does he have any tensing, tenderness, discomfort, or pain? Sore anywhere else?
Could he have eaten anything he should not have (ie bones, toys, plants, chemicals, human meds, etc)?
Any chance of head trauma?