Pain is imperfection. God is perfect. So no, God does not 'feel' pain. People feel pain and those in hell (including demons) feel pain, but not God and not anyone who has made it to heaven. In heaven, you have reached a place of perfection where there is no more physical or emotional or any kind of pain.

OP, you need to get to know the Bible. All of your questions will be answered in the Bible. If you're a Christian, start with the New Testament but make sure you also learn the Old Testament as well. God will also answer your questions through his spirit, but you've got get to know him as a born-again follower of Jesus. There is no other way.