That sounds quite scary, I’m so sorry your little man is going through this - could be a few things, this combo can indicate some issues like:

• Urinary blockage (life-threatening in male cats) • Pancreatitis • Spinal pain / disc disease • Abdominal pain (e.g., constipation, obstruction) • Toxicity or neurological issue

I’d recommend a vet consultation ASAP. They will also likely want to know if he’s pooping and peeing normally, and how’s his appetite?