Hi.. I have been tracking my baby’s weight. His weight on 11 Nov was 4.19kg.. Then we checked at home on 14 Nov and 16 Nov and we found his weight to be 4.4kg and 4.52kg respectively. Till then his weight was increasing. But today, when he is 6 weeks old, we checked his weight again and it was 4.3 kg.. there is a reduction in his weight. He was spitting up and crying for last few days at night. Is there any issue?