Low fee transactions will eventually confirm or fall off the network. It looks like your transaction already has 2 confirmations at this time though!
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
The only way to increase the fee after the fact is by using RBF which isn't enable by default in Electrum but can be in the options. I'd recommend you try out the Dynamic fees options which can help simply fees in Electrum. I usually move the slider far to the right for a quick confirmation.