Should I be worried

I am 3 Weeks postpartum and sometimes cramp really bad. I don’t bleed anymore but I do have yellow discharge and to me it does have a smell. Also. Every once in a while I get a twinge of pain on my labia (vaginal lips).

I was told that it could be because my body isn’t fully healed yet and never really took a moment to sit and relax like women who just had a baby should. But I feel like that’s not right so I’m looking second opinions