Do I Have to Go Back to Confession if I Forgot to Confess a Sin?

A recent convert to Catholicism wonders if the sins from the past forty years that he forgets to confess have been forgiven. Father Dave explains that because the priest was aware that it was his first Confession, the priest understands that it's unlikely for a someone to remember every sin they've ever committed, so their sins are still forgiven. Father Dave also encourages him to confess a sin that he remembers if it is weighing heavy on his heart. Original Air 1-25-18