First period since baby and its hell

Mercadies • Married 9-8-12!! Have a daughter born in 2007 and a boy who was born on 2-25-15
At first I wasn't sure cuz this is my 4th time bleeding since my son was 5 weeks old, he is 3 months old now. I can't  remember having my first period after having my daughter 8 years ago weather it was heavy and passing clots like I am now.