J.K.
I don't have periods for 9-18 months after having a baby. Right now I have a 7 month old and no period yet. I was on the "mini pill" after my 4th baby and I didn't have a period for 14 months with that baby. When I finally had one, they were kind of weird. Even after I stopped the pill, it took about a year of being off the pill for my cycles to get normal again. Good luck and congratulations!