sezjm,

Here's Dr Sarah Buckley's article HERE, which is well referenced. She is well regarded in the industry and knows her stuff.

Its just another one of those things they do 'just in case' to fasten things up, which is annoying when not every woman is going to haemorrage. Gees, did every woman have a haemorrhage way back when?! Its so unfair that they do this, usually without informed permission.