hi Doctor, my baby girl deliver with 3.1 kg weight and in 45 days vaccination she was 3.8 and in the 75 days she was 4.6 kg . I'm exclusively breastfeeding her .I donno why she is not gaining enough weight.she has frothy loose stool from the day 20 till day.doctor has told it could be gas .but I worried that that loose frothy stool makes her not to gain weight. once in two feed,she is going motion as watery and frothy.is that normal. should I give any medicine for that. pls suggest me.