Its alarming to know that you had a c section 4 years ago and now you are having gaping of scar at two places, and a second gaping even after getting it repaired 2 weeks back.
Since you are slightly over weight and with the possibility of unintentionally you must have lifted heavy weights, there can be an association with your gaping hernia.
Medically such a condition is known as incisional hernia
I suggest you get an ultrasound
scan of yor scar in the abdominal wall and look for the internal giving awal of the abdominal wall. Once this is assessed, the surgeon can put a mesh and repair the region. This will be a curative treatment.
Hope this helps.