Hi Mrs-B,

The standard estimate for ladies varies from 1.5l to 2l (mayo clinic recommends 2.2l. This is for people without any significant ailments. Maybe this is 2 not enough for you at this stage?

On one of the forum threads I recall there is a simple calculator which works out as a guideline how much fluid you should have based on your body weight.

The other thing is that came to mind is that it could be that your body is adjusting to any change in your diet - e.g. if you have stopped drinking coffee (which is a diuretic) it may be missing that extra ingredient that helps you "go"

Hope this helps