Are my Bitcoins in danger?

I have been waiting 15 hours for a transaction to be confirmed. I tried to relay it through viaBTC.com but it doesn’t seemed to have done anything. Since then I have been getting this message on the blockchain

“Warning! this transaction is a double spend. You should be extremely careful when trusting any transactions to/from this sender”

I have no idea what is going on with my coins. Here’s the blockchain ID if you want to have a look for yourself https://blockchain.info/tx/df1f81e5d6bc78d76396066b75ba274c5eb15f29d241659228de256f7d02c97e

Any help will be greatly appreciated

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