Breaking point.

I'm at my limit right now. Idk if this is what they call pp depression or not but when I get to the point that I start crying at 5, 6, 7 am while feeding her and then after she stops eating putting her down and she won't stop crying and all I can do is try my absolute hardest not to rip my hair out of my head from the exhaustion and headaches. Why does any mom ever even BOTHER going to sleep for ? For what ? I feel MORE exhausted with this fucking broken ass sleep than I do if I would just stay awake. I'm not asking for advice, just venting.