Sometimes, we just have random dreams. Yu my have had a conversation abotu catholic/christianity (its the same thing BTW) before bed, or thinking of the ins and outs. You may feel some guilt abotu NOT being caltholic (hows that for a turn around eh! lol) concidering monotheistic religions out number every other denomination in the western world, it plays a part in all our minds, catholic or not.
Weird dream though... lol
FYI - they dont sing the 12 days of christmas in a catholic church for christmas LOL Ive been baptized, communed and confirmed in the roman catholic church ( im sure youve seen in my posts im really non practising but still LOL)