I recently discovered that not all hi-fibre things are equal... All-bran has 27g of fibre, which is loads more than eg Fruit and fibre which has 15g. So you can get a huge fibre intake every morning with that, having water at the same time makes it even more effective. Also avoiding processed flour - white bread, pastries, pasta - helps for me.
It tastes vile, like cardboard shreds in cheap, out of date orange squash, but it does seem to do to the trick. I take one for a couple of nights in a row, every two or three weeks, when things seem to be more than usually slow, IFKWIM (and I think you do).
just wanted to add i was suffering terribly with constipation this time last week - after midwifes advice and bran flakes and linseeds for breakfast coupled with half a bag of dried apricots every day I am now pooing like a trooper!!
Hurray!!!! felt like i was about 12 months pregnant not nearly 6!!