**Speaking as a fmr Catholic turned Baptist **
You are always a Catholic due to the mark of Baptism and Confirmation on your soul. God will ask you about that at the moment you die.
We welcome you back to the Catholic Church at any time. Sit down with a priest and get you questions answered.
There is no mark on my soul. There is nothing in Scripture that states what you're claiming.
And even if there was, when one comes to Christ and is forgiven, the past is gone. The curse is broken. The old has passed away and ALL thing have become new.
God will ask you about that at the moment you die.
And you know this how? What chapter and verse tells us this?
Oh? It's NOT in the Bible? Then where did you hear it? Did someone come back from the dead and tell us all about it?
And what makes you such an authority on God and how He deals with us and what we have to answer for when we face Him?