I sent bitcoin from blockchain but it is still unconfirmation .
I am waiting to now is 7 days .
I checked that transaction in my history in blockchain but it's not show .
I don't understand what's happen with blockchain
Anyone can help me ....
There is no way you would have sent a transaction successfully the right way and it would not show cause that is the only way you can get your transaction ID for verification to know if it has been confirmed or not.
How about your balance, has it been deducted ? If you can get your transaction ID, you can make use of some services[1] on the forum that can help you speed up your transaction.
[1] You can find few free bitcoin tx accelerating services from service section.