Descartes Fear of Being a Heretic?

1. Does Descartes actually believe in God or is he forced to place the belief of God into his text due to fear of being accused a heretic.

I am skeptical as to whether Descartes' believes in God and in his own reasons for saying God exists. I have first taken into consideration the fact that during this time and place it was highly frowned upon to disagree with the church and one can be put to death for this. When reading Descartes biography it stated that he pulled his material off from publication when he received word of Galileo's trial in Rome. Having this information it seems to me that there must have been some information that Descartes feared he would be put to death for. I believe this information was his reasoning that a God does not exist, however he revised his works to include that God actually does exist and includes his reasoning for so. Descartes says to doubt everything, later he says to doubt everything that is not certain. This definably includes the belief of God for even today