Where My Menstrual Cycle?

Roshaunda
I had my 5th daughter May 15, 2016 and still no period. I always went back to a normal period after 6 weeks and this time nothing at all. Has this happened to anyone else. I'm enjoying not having my girly and it's not about a pregnancy scare since I recently gotten my tubes tied, just trying to understand what is going on with my body.