We would need to look at the TXID (in the Transactions page, then double click on the Reward) item

Then we can look it up in the blockchain to see if you won it or if someone else beat you to it?

To know for sure you could go to Help / Advanced Options / Console and type

listtransactions

Since its the last one it would tell you if its an "orphan" or not.

Orphan blocks can happen when two (or more) miners find the nonce at around the same time -- the one who broadcasts it to the network first and is accepted will be the winner.  It can also happen if one miner finds a nonce at a higher proof of work (difficulty), or has more transactions folded in.

-dvd