Discharge & pain - 7 weeks PP

Vaginal birth on May 22. Went through the whole lochia process...I thought. The bleeding had stopped, but then at week 6 PP, my vagina began to feel so heavy, like there's a weight between my legs and I get this yellowish white discharge. Still hasn't subsided and I'm going on week 7. What is the discharge? And should I feel that heaviness again?