I went through a bad spell of constipation early on in low carb dieting. I still get it occasionally nearly ten months in. I now have chia or flax seeds everyday and have increased the amount I drink hugely However. I still sometimes have to reach for the Senna!
A lot of people seem to experience this problem because of the change in diet. I can only say that, in my experience, it's something which corrects itself later; but, as you say, it probably helps to drink more, ear more leafy vegetables and try flaxseed in yoghurt etc.
I went through a bad spell of constipation early on in low carb dieting. I still get it occasionally nearly ten months in. I now have chia or flax seeds everyday and have increased the amount I drink hugely However. I still sometimes have to reach for the Senna!