I'm afraid there is no way to get back to place that you died unless you are a VIP, a VIP has the /back command that you can use to get back to your stuff as soon as you die.
You can also try and get back to your stuff be four they de-spawn but if you don't make it in time I'm afraid your stuff is lost.
As for the creeper.... mate thats one stroke of bad luck lol. That's all I have to say about that man.
Sorry about your stuff man, its happened to countless times, you'll get over it soon.