Did you have a managed or physiological third stage?

Did they give you any reasons why this may have happened?

Every birth is different. You were fine for your first two, not great with the third - but that's not to say you won't be ok with your fourth.

Speak to your OB or midwife about how to manage it this time around - a managed third stage sounds like it may help with the bleeding - depending on what the cause of it was last time