First period after giving birth ..

Aisha. 6/4/07👸🏻,2/23/15👸🏻 , 11/01/2018👸🏻

It’s been 6weeks since I gave birth. After I had her I bleed for 2 almost 3 weeks. Now I got my first period and it’s so heavy and I’m having a lot of strong cramps is this normal did anyone else get strong cramps in the first period ?