The "sacraments" are not available to those who have accepted Jesus Christ and receive His salvation in the first place. They are not open to unbelievers.
So, don't worry about it. Our salvation is by the shed blood of Jesus applied over our sin. When we repent and turn to Christ and follow after Him in life, then we have received salvation. That is what the exciting Gospel message is all about! It is a free gift of God! There is nothing you or I can do to earn salvation except by accepting the free gift of God.
Regarding "confession", we only confess to God through Jesus Christ, our ONLY mediator. He forgives every time!
1 John 1:9
But if we confess our sins to him, he is faithful and just to forgive us our sins and to cleanse us from all wickedness.
1 Timothy 2:5
For there is only one God and one Mediator who can reconcile God and humanity—the man Christ Jesus.