If your mother was a Catholic then you must be too? Correct?
Yes, but my paternal line was Jewish converts to Lutheranism (I think for self-protection) and then to Catholicism.
My maternal line has been Catholic for centuries.
Interestingly enough, my husbands line was steeped in some variant of Hillbilly Protestantism and when I researched his line, it was Catholic from 1560 back.
He’s now Catholic.
Forgive me if you were only being humorous, but, actually, that is not true. No one is born as a Catholic, or inherits Catholicism as if genetically. One becomes a Catholic, a Christian, upon being validly baptized.