Thanks to all of you. Got it now. I canceled it, it returned to me and I resent it. Originally I used 3.5, I bumped it to 7.
Just bump the fee next time. You do not need to cancel it. There is a fee deduction for cancelling transaction just like pump fee. They are the same but just that if you cancel the transaction, the coins will be sent to another address on your wallet instead for it to be sent to the destination address if you bump fee.