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:
How long has Bitty been like this?
Have you seen him try to pass urine at all? Straining? Licking his genitals more?
If you press on his belly (as far back as between his back legs), does he have any tenderness, tensing, or pain?
Any gagging, retching, lip licking, or vomiting?
Any breathing changes? Are his gums as pink as the other cats?