What happens to the lochia during hypovolemic shock?

I guess that in hypovolemic shock that the woman would've bled significantly to put her into that state and once the shock was treated and cause of bleeding that it would settle down to normal.
The sickness i think is something to do with peristalsis slowing but i'm not sure. Someone will probably give you a far better answer than me.
Edit to say that on googling the thing on peristalsis might not be right as apparently it's the movement in the abdomen that's supposed to cause sickness not the slowing down of it.

The sickness is in relation to the drop in BP during a massive haemorrhage (and possibly due to the drugs we'd pump into someone to stop them bleeding in the case of a PPH).

A PPH is caused by a bleed from the placental site, which is why blood loss is so massive in such a short time period, as blood flow tot he placenta is large. So the lochia, which is the shedding of the decidua, wouldn't be affected as such, as it's a different kind of bleed.