Not Happy

We have a cat that has been a great cat for 3 years now. We have had him from the day he was born and never had a problem. He is Olivia's pride and joy. A few days ago I noticed a small wet spot on our couch, and upon further inspection discovered it was cat pee. I cleaned it as well as I could and was just happy it was a small spot. Then late this afternoon, I sat in a wet spot, a much larger wet spot. After scrubbing the couch cushion, which is probably ruined now anyways, I removed it from the couch so no one would sit on it while it was drying. I discovered an extremely large wet spot along the side of the armrest and on the area under the cushions. I could immediately smell the urine very strongly and I won't go into detail with how upset I was, or still am. We bought new furniture to go in our new house, something we were very proud of being able to do. Now it is soaked in cat urine and the whole living room smells. He has never done this before, has always used the litter box with no problems. He isn't fixed, but he NEVER goes outside. Actually, he is afraid to. And from what I've read online, even if we get him fixed it doesn't guarantee that it will solve the problem. He isn't ever around other cats, so there shouldn't be any reason for him to mark his territory. I will be taking him in to the vet to be checked for a UTI, as I did find some info online that suggested that could be the problem. If it isn't then I'm really lost on what to do. No one has a miracle suggestion for removing the odor. Most people have had to get rid of the furniture or carpet that contains the odor. We cannot afford to replace brand new furniture right now! I don't know what to do. Ugh. I can't help but wonder why we even wanted pets in the first place. Our dog never stops barking and now our cat is peeing on our furniture. Calgon, Take Me Away!