Waiting is the hardest work I know, but as an old country man of my acquaintance once said, "Don't just do something. Stand there."
I remember the guy from Utah who had his hand caught between rocks in a canyon for two days. Think this was back in 2004. Only after cutting off his hand with a pen knife (!) did he manage to come out alive. I guess you also have to make a judgement call about your situation.