I am interested to know how you ended up going with bubs?
Did you ever find out what worked and what the problem was/is.
I have tried so hard to burp baby as i gather that gassy /sore tummy problem is from not burping properly or enough (it is so hard to burp them and i am guessing that might be abit of my problem)

I usually find in the evenings that baby is most unsettled and like you i know she is hungry so i pop her on the breast and a few minutes later she is screaming uncontrollably, so i try to burp her and put her back on the breast but most times when she is this upset she wont attach and i usually have to put her to sleep for her to settle and then she usually wakes up ok. However she does push and go really red in the face and stiff when she is upset.... all the same symptons as your bubs..

So keen to know what you might have found out?

Hope all is well