My Dear Serena,
I have 6 children, And I do knw what you are talking about. 2 of my children were like that.
My son (who is now 12) could not drink anything but goats milk. We tried Everything, I mean Everything. Thankful now he can drink reg milk. But it might take time to figure out what she can handle. Until then, when she is like that, hold her in the football hold. With her belly on your forarm. This might help, plus you can lay her on her back and rotate her legs to her tummy to help get the gas out.
You will have to try diff things till you see what works for her.
There are also gas drops/ gas pills that works well, I started my babies on the when they where a month old. There are all diff kinds.
I just thought of something, it could also be the Iron. My 3 of mine could not take the iron.
I hope this helps, if you need anything just let me know, If I cant help, hopefully someone else will be able to help.
Take care and Deep breath

Chele'
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Good Bless our Troops