You probably payed too little for transaction fee.
Go to blockchain.info for BTC or etherscan.io for ETH. There you enter your BTC / ETH address. There you can see if your transaction is pending.
I have changed fr blockchain to electrum long time ago but now I see this wallet shows cheapest fees than any online wallet for bitcoin and ETH transaction. May i know where your transaction is pending hence I can help you in accelerating the transaction.
Hope you didn't modify the fees is low in blockchain wallet, default normal fees would be the best idea to make the transaction confirmed soon. If you modify it you will not get in a hour of time or more.