Multibit is no longer supported.  I cannot change the tx fees, and the standard fees are way too low, given the current state of the network.  Is there another software or online wallet I can use to import my private key and send from that wallet?   I tried to send a few days ago, but it's not showing up on either blockchain.info or blockexplorer.com.  It is only showing up in my Multibit wallet.

Also, since there is a pending, unconfirmed transaction from my Multibit wallet, will that screw anything up if I import my key to another wallet while that is still pending?