It took you a few months to actually design the game..
No.
I didn't work on it every single day, for one. And the days that I did work consecutively, it wasn't on the same game.
And two, its just something I do in study hall when I'm bored. Whenever I have a concept for something I have to write it down or ill forget it.
This leads to quite a few notebooks being full of stuff for games.