I might be insane but as I was reading the books I got more and more sure that it would turn out that it was Roland's 19th or 99th loop and that's why these numbers follow the ka-tet everywhere. (I had met some spoilers that's why I could think of it for long however I didn't finish the series yet.)
I was so damn sure about it and I felt some pride as well that I could find it out by myself.
That's one thing that I was wrong because King didn't mention such things at all
BUT
did we get any answer why these numbers followed the ka-tet? Did I miss something? I was reading the last book so fast (when I strated to read it at last) that it might be possible I missed something but it's hard for me to believe it.
Do we know what this 19/99 thing was exactly?