Like many others have said, some women have excessive discharge. I have, and I hate it. Some of you will be horrified as I've always had to wear liners, but it has been a lot worse since I became peri menopausal. I now wear 2 long liners a day and frequently have to change them at night too when the liners are 'full'. I have seen the doctor and nurse many times over the last few years but they can't find anything wrong and say it's just one of those things. I keep going back though, as I'm still hoping they will find something they can treat.
For those questioning whether 'excessive' discharge is actually excessive, in my case it's when you can feel the discharge pouring out, often when I stand up, and having to go to the loo to check, in case it has leaked through your clothes (the goo can be quite thick so it takes longer to absorb). It's when the extra large liner you remove after a day or half day has grown to about 1cm thick as it's holding so much 'goo'. It's when you have to change full, wet pads throughout the day or get sore from sitting in permanent damp.
I'm sorry if this is too graphic, but as someone said upthread, noone ever talks about this stuff. All of you who who think people are gross and smelly for wearing pads just don't seem to understand that the discharge really would go right through knickers and clothes and leave a permanent, visible wet patch. And you get sore from sitting in wet all day. I realise I'm probably a lot worse than most, hence the doctor visits, but there's a whole spectrum of 'excessive' and those of us who have to put up with it feel bad enough about it, without others seemingly trying to shame us for wearing the pads we need to contain it.