Has your period got worse since having kids?

I had my son this October And I’ve had 2 periods since. I can’t remember how long my first period lasted but I’m on my second period and it’s already going on 8 days and the cramps are unbearable 💔😣. In the past my period usually lasted 5-7 days and I hardly ever had cramps so I’m not used to this. Not to mention I got back on my nexplanon and before when I had this birth control my periods were really light and didn’t come every month so I’m shocked at this. Has anyone else’s periods changed?