EBF Or pumping and Period PP

Vanessa • Single mommy to baby Ava 05-31-16💕💜
How long did it take you ladies to get your period after baby?  I was EBF but now exclusiving pumping and ive been having cramps in my lower back the past two days. 4 weeks and 2 days PP.  before baby i would get crampy the week before my period came. Have any of you ladies been pumping/breastfeeding and your period come back this early? Or is this typical?