Be assured that when we truly repent and turn from our sinful ways that God forgives our wrongdoing and forgets about the awful things we have done.
As far as the east is from the west, so far has He removed our transgressions from us.
Once you were alienated from God and were enemies in your minds because of your evil behaviour. But now He has reconciled you by Christ's physical body through death to present you Holy in His sight, without blemish and free from accusation - if you continue in your faith, established and firm, not moved from the hope held out in the gospel.
In the Book of Romans the eight chapter verse one says, there is no condemnation for those who are in Christ. This means that the guilt that looms over us when we have sinned has no place in our lives when we truly turn and ask for the Lord's forgiveness. Once we have repented, He cleanses and purifies our spirits and we get to start over...holy, pure and blameless in His sight.