Hi,
What are her stools like and what is the frequency of them? My LO (now 7 months) Was breastfed for 2 weeks after which he was formula fed (also small at birth and little weight gain). Soon after, he developed frequent smelly stools, A LOT of wind, vomiting, crying and drawing legs up. This went on for 4 weeks until he started soya milk. The symptoms inproved IMMENSLEY, but not completely as he still vomited a lot and drawing legs up
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. After trying loads of bottles and teats, we found that on AVENT no.1 teats the problem more or less dissapeared. A few months later he started vomiting again, but gaviscon seemed to help the crying related to this.
So it eneded being a mixture of things!
Good luck xx