I have a similar problem I sent a transaction yesterday that is still pending. I had a higher fee and when I went to send the transaction the wallet recommended a different lower fee. Naturally I accepted the lower fee. This was around 4pm Central time on July 10 and I'm still waiting. Is there a way to recall the transaction? Right now it seems the BTC is going to be waiting for block acceptance forever. Would be nice to get my .3542 BTC back sometime today. And wouldn't it make sense that with higher transactions flowing across the blockchain miners would be more willing to accept lower fees? How profit motivated is this system going to be? It seems this kind of defeats the perceived decentralisation of Bitcoin. Go Greed!