Most likely due to - pani Kam pine ke karan aur garmi me pasina jyada banne ke karan Try taking 1 glass of water / chhas / nimbu pani -- har 2 ghante pe If urine output is still low Maintain voiding diary 24 ghanto ka ( aj subah se kal subah tak,) 1 column me kitna pani piya time ke sath note karo Dusre column me kitna peshab kiya vo note karo ( peshab mapne ka urine pot medical store pe milega) Dono ka total karna hai Aisa 2 din note karke .. Urologist ko consult kariye