Last time I tried sending a transaction with the minimum fee it was succesful after 1 day. 2 days ago i tried sending one with a higher fee and double the bitcoin amount but its still unconfirmed. https://blockchain.info/tx-index/7e3e62569bb24f029ddce8730320bd2dbce10bc6893e4c117f5c49be18c96cf1
An unconfirmed transaction will eventually be accepted into a block by whichever mining pool mines the block, or the transaction will eventually be rejected by the bitcoin network after an estimated one to seven days. If it eventually is rejected, then the funds would remain at the bitcoin address they were sent from. The only thing you can do at this point is to wait and see if the transaction is accepted into a block. Like all wallet providers, Blockchain.info has absolutely no control over this, and cannot expedite transactions. This is always dependent upon the bitcoin network of miners, which we are not a part of.
Blockchain.info wallets utilize dynamic fees. The following link explains how this works - https://blog.blockchain.com/2016/03/16/introducing-dynamic-fees/.
The bitcoin mempool is currently backlogged, which is causing a delay with transaction confirmations. You can follow it live on this chart, which shows all pending bitcoin transactions on the bitcoin network - https://blockchain.info/charts/mempool-count. This is impacting the entire bitcoin network, not just Blockchain.info.