Period question..

Lacey • Mommy to an Angel 1.14.16; wife 9.24.16; rainbow baby 4.4.17 && Baby #3 Due 4.28.20
After you gave birth, (no matter what number of baby you're on), when did your period start? It's been almost 4 weeks since I gave birth to my son and I haven't hadn't any "after birth bleeding" in about a week. 
Just curious!