Hi akid it's funny you ask this as I thought I was the only one to experience this as a child. I left 30 years ago.I was born in most family still in. As far back as I was old enough to consciously think so 5 or 6 dev by 7 I felt it didn't add up or as they say now 'something was off. I couldn't quantify this assumed it was me , feeling wouldn't go away just nagged and nagged. Incidentally I was there in 1974 at Twickenham Assembly in uk when the end of the world in 1975 was announced from the platform, so don't ever let anyone tell you it was just minions getting over keen it was announced. I never quite bought into it, I should have been keen for the new system but I wasn't.
It wasn't just the above the samefeeling continued into my teens I grew to hate it, it was like this millstone, I thought why me why can't I be like everyone else. I guess what I would call this feeling now is cognitive dissonant but didn't know that word then. I'm sure this is why I never got baptised.
This is your gut feeling, real truth doesn't feel the same. Real truth is like a still small voice of calm, it is a settled feeling and deep down knowledge that something is right, learn to discern the difference between the 2 in a world charlatans and loud voices your gut instinct is the best guide you have. If you retain a belief then your salvation is the most I important decision you will ever make think carefully who you put your trust in. Good luck.