Unconfirmed Siacoins disappeared

[hll]

Hey,
I send Siacoins to my wallet and my exchange told me that they are succesfully send to my wallet. I looked into my siacoin wallet and it said that they are unconfirmed. I closed my wallet since it took a long time to confirm and when I restarted it all of my siacoins where gone. How can I get them back?!

[SandBlock]

@hll
You can search your TXID here https://explorer.siahub.info/

If you can find your TXID there, your transaction is completed and will appear in your wallet.