And I have no transaction history on coinbase.
You should be able to get all your transaction history on the Tools -> Report page on coinbase.
If you don't have your bitcoin on your account balance and you have no transaction record, one possible reason is that you have copied the a wrong address for your deposits. Another possible reason is that there is a problem in the coinbase database.
I am sure i have not copied the wrong address and i have no transaction history. Its like its just vanished along with my btc. Thanks for the help
In a block explorer, look up the address you sent the coins from. You should see the transaction that sent the coins to the Coinbase address. Make sure it went to the correct address. Coinbase lists all the addresses used for your account somewhere.
If you post the public addresses here, someone can take a look without any risk to you.