Milk issues

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Anyone else having milk issues?

we started whole milk combo with formula, and she was gassy and fussy and threw up.

we started lactose free whole milk next and she just threw up when I fed her.

I hate that there are no good dairy alternatives, so I'm apprehensive to switch to a nut milk.

anyone have any advice? the pediatrician is more of "wait a week" and see but I don't want my child to suffer...