i had kidney transplant Oct 2012 and a cervical spine surgery for C3-4 TB bone infection Nov 2012. All vital parameters are in order ie BP 125/75, Cr 1.4 the last 2weeks from 1.2, Urea 15.0, weight 74kg. i am on 6litres of water consumtion daily. Now, with all that water i still labour to pass motions thus stomach pain to cause headache so hw do i handle this?