Today I broadcast a transaction.

The amount was deliberately small.... 50c worth of BTC. I wanted to see how it would be treated by the network.

We are 6hrs 30 mins later and the transaction status is still unconfirmed.

The fee, 12c, is low, of course ... given the transaction amount (although not low compared to the trx amount) but does this mean my transaction may never make it onto the blockchain?

I'll leave it overnight and keep watching it tomorrow but how would I know it is time to do something to get it confirmed? And what should that something be?

I've heard, leaving my sending wallet open will usually keep broadcasting and also I heard that one might try adjusting the fee... is that correct?