i have to save the blue ones. Do i have OCD?

I was talking to this girl at work, i asked her if she had any weird habits, she said no, i told her that every time i eat m&m's i have to save the blue ones to eat last. she told me that it wasn't a habit, but some kind of disease, she told me that when she was young that she had to do everything in pairs like knock twice, or clap twice. maybe it was OCD but i don't remember...