I have a similar issue.

Been holding a bitcoin in MultibitHD.

Have tried to send a week ago using the default transaction fee that worked in the past. (0.00001) - I don't think it support dynamic fees.
It didn't work - and has been stuck as unconfirmed.

The address I was sending to was another from the same wallet (I was doing this for the Byteball sync a few days ago)

I have since tried to send again to another separate wallet - and upped the transaction fee to the default setting in Multibit (0.00005)

This still hasn't gone through.


I'm concerned my BTC will just be stuck in some weird perpetual limbo - I don't really understand what to do in this situation, if the transactions will time out, or what to expect.

If anyone here has any advice I'd really appreciate it.