Thanks for all your help. I'll just wait it out.

Is there anyway I can tell when the network has forgotten about a  unconfirmed transaction? Sorry for all the questions.

I don't know what that is. I have two transactions that are unconfirmed that were sent at the same time. The other was for a much larger amount.
e242ddba700e1ae9687d1463a518a953be61683fb1489836252fd37973fe223d

I can't see any way I can delete the transaction in the wallet I am using. The only thing I can see is 'Reset block chain, transactions and wallet balance'. Would this do the trick?

Thanks for your help, much appreciated.

Should I just shut down the wallet to stop it rebroadcasting the transaction?

Thanks for your help. I was just worried it may never show up again.

It was sent from the bitcoin wallet developers
https://play.google.com/store/apps/details?id=de.schildbach.wallet&hl=en_GB&gl=US

I think this is the ID 21e118002a5ab28cd7f3c3947994f5d28db978e41cd5a8ce2980bc8cb283113f

I sent some bitcoins to a new wallet that I have but I set the network fee too low(I know, I'm an idiot). It remained pending in there for 3 days then disappeared.

I've read that it will eventually be forgotten by the network and return to the original wallet and that that the transaction may not appear in your wallet but you will be able to send them again with a higher fee.

Is it just the transaction that may not appear? You will still see the bitcoins come back to the wallet?
 
Is there a possibility that they may never return?



I would appreciate anyone's help on this.