Chances are you mined an orphan block, an rare but daily occurrence in these currencies.
Could you possibly try checking your log and search for which block you found?
If the block was orphaned it would also be recorded in your daemon log.
can you tell me what to look for inside the log?
i dont know how it looks like if i find a block
I'm going to assume you're using windows?
Open your wallet log file, push CTRL + F. This will open a window for you to search for something.
Try searching for "miner", "found block", or "found". Make sure you're at the top of the file and the "down" direction is selected.
The same goes for the bitmonerod log file. Try searching for "orphan"
Make sure you've typed save in both windows before searching