Please Help me with Iphone 5s and ICloud

Hello!

I have an IPhone 5S and I accidentally deleted a very important conversation. My phone apparently did an ICloud backup beforehand this morning, but messages is not an option anywhere on there. How can I restore just this message or my messages without resetting my phone? I really dont want to lose everything because I cannot afford to keep all the data so I only have the stuff I would need if it were totally necessary such as I lost my cell phone. I just want to get my messages back! Please help!

Thank you