system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What actually happens that can cause women to die during childbirth?

In ancient times child birth was quite dangerous and it's still a danger today.  I know that blood loss is a major factor but very few sites go into details about what actually happens that causes the bleeding or complications.  Even though it says explain like I'm five, I'd prefer a nsfw or not safe for five year old answer to get the actual truth if necessary.
gpt
One cause of death can be hemorrhaging. When you give birth, it's not just to a baby - it's also to the entire lining of your uterus. First comes your gooey little bundle of joy and next comes the worst period you've ever had in your life, that can last 3-5 days. Sometimes the bleeding is excessive and/or doesn't stop. 

When you're bleeding from something like a cut, you can put pressure on it to stop the bleeding or even use a tourniquet. But you can't put a tourniquet on your uterus very easily, so uncontrolled bleeding can be really hard to stop. Some women die of blood loss.