Lucky for you guys because I didn't experience this yesterday when I sent some of bitcoin into my other wallet to cash them out but until now the transaction has not yet been confirmed, but I set at a low priority with a low transaction fee amount it sucks maybe because of the wallet I have used.
I guest you are using mycelium mobile wallet, because that is the same scenario in the wallet of my wife she send her fund to our local bitcoin wallet for cashing out because she have things want to buy but the confirmation was too slow i think 2 or 3 days to confirm that is sucks it was first time to experience.
correct: edit your post and put the tx id if someone see the unconfirmed transaction they can easily helps you about that, much better if that services is for free.