with the recent news about the orphan block and what not I want to know if my bitcoin is safe. i stored it in a wallet a few months ago using a private key generated with bitaddress. its been stored in cold storage since and if there isnt any risk then i dont want to mess up the security and have to re do a private key.

so is the problem only to do with recieving btc? should i be concerned and take action?

because im not technical enough to understand im asking for your help.