Hallow Dear,
The very fact your friend has
lochia which has an offending smell indicates that she is having infection of the
uterus. If may be or may not be due to some retained products inside the
uterine cavity which can be ascertained by
ultrasonography.
Anyway, she is having puerperal
sepsis and hence she needs an antibiotics treatment.
Moreover, her legs are swollen. This can happen after delivery due to formation of clots in the deep veins of the legs. This is a rather serious complication. These clots can get dislodged and block the vessels of vital organs like heart, lungs, brain, etc.
Having oversized belly immediately after delivery is normal and needs exercises to get it to normal size and shape.
Please insist on her reporting to her Obstetrician ASAP and get admitted to the hospital till she gets cured.
I hope this gives you the required message.
Dr. Nishikant Shrotri