Yes. There is a God.
He's the one who creates us.
No. when you die, you are dead.
Actually, research indicates the opposite.
A large scientific study determined that veridical perception during brain-death is a scientific fact. Consciousness and awareness appeared to occur during a three-minute period when there was no heartbeat. This is paradoxical, since the brain typically ceases functioning within 20-30 seconds of the heart stopping and doesnt resume again until the heart has been restarted. Furthermore, the detailed recollections of visual awareness in this case were consistent with verified events.
Press release:
http://www.southampton.ac.uk/news/2014/10/07-worlds-largest-near-death-experiences-study.page#.VDa5LhaOqSo.
Many more points of evidence:
http://www.near-death.com/science/evidence.html