Clare has already given you a good answer.
What you should worry about, above all, is whether or not you're making a good confession. It has been said many times over that a countless amount of souls go to Hell for bad confessions and for not avoiding the occasions of sin. That is what you must worry about, above all, before you worry about whether or not God is hearing your prayers.
If you end up in Hell, God will turn a deaf ear to your prayers and ignore you for all eternity, for as long as He is God.