Saying goodbye to my kitty today

So sad right now. My cat who is only three years old more than likely has cancer (from what the vet has seen) and is being put down tomorrow. Has any of your cats experienced this? It started with patches of his fur disappearing, then this lip had a little patch that had a wound on it. Now his genitals are raw lumpy and leak every time he sits. it all happened so fast. I wish I could snuggle him on his last day but his butt leaks literally all the time.

This was him before all this started, my handsome man😻

This was right when it first started

This is his genitals now😢😢