Hello, after this time I still have the wallet with all the bitcoins, every day I have more as I receive incoming transfers, I want to withdraw them but I am afraid that the next day the FBI will arrest me,
I wrote earlier about how to prove to yourself and others that you have the private key without accessing the coins -- simply sign a message with the private key.
Your fears of arrest are completely overblown. There is no way for anyone to identify you if you simply move the coins from their current address to another.