While there are many versions of Christianity, a couple of the main branches are (a) it is about sin and (b) it is about being forgiven for sin. I have my own impression about which is the stronger of the two: The sin branch is more important than forgiveness one.
The old version of the sin branch would be represented by the Southern Baptist Convention. The worst sin for a 150 years was interracial marriage.
It was such a grave sin, slavery followed by segregation was necessary to keep the races from intermarrying. During those times, God’s view of marriage was between a man and woman of the same race.
Today they have dropped the race part so gay marriage can be the major sin. Southern Baptists are joined by Catholics and several other Protestant branches in the focus on sin.
The branch which focus’ on forgiveness is known generically the emerging church. This group does not focus on the cross and hell but on the acceptance of sinners by Jesus.
I think the impression of the majority of Christians and non Christians alike is the faith is mostly about sin. I’m not alone in this. Religion Professor, Stephen Prothero , God is Not One, thinks the street level understanding of Christianity focus’ on sin. It is the topic of most of the articles about religion on ChristianPost.com.
Are you really forgiven for your sins? My advice would be, don’t worry about it.