Pregnancy is associated with many metabolic changes in mother .Due to this reason maternal physiological,Biochemical,Haematological parameters change drastically. If pregnancy goes without any complications, these changes are reversible after delivery¹. As pregnancy advances, there is increased demand of energy for growing fetus. Pregnant women require an additional energy of 300Kcal/day over routine energy intake². The average glucose utilized by a growing fetus at the third trimester reaches approximately to 33µmol/kg/min³. Normal pregnancy is associated with increased insulin resistance. Due to insulin resistance in mothers, there is more utilization of fats than carbohydrates for energy by mother and carbohydrates are spared for fetus.