Much respect to MammyT for bringing this subject up, as it seems to still be a bit of a taboo subject, even in this day and age.
It most definitely should not be. There needs to be somewhere for everyone affected to talk about their feelings and what they are going through, and also so other new mums can go for advice and support from people who have been through it.
Perhaps in the 'Pregnancy' part of the forum, we could have a 'Pregnancy Health' section where we can add threads concerning health problems that are associated with pregnancy? In a health section we could discuss anything from bad heartburn, to pelvic girdle pain, to depression. At least we come on here then and say 'these are the problems i'm having, can anybody give me some advice'.