Our maternity nurse who has tried everything over the years told us to use DENTINOX: this is the best working colic medicine. Our DD would cry during and after feeds (breastfed for the first 3 months). You give her Dentinox before, during or immediately after each feed and she's fine, no crying, no bubbles in the stomach. It works better than Infacol etc. even though the main active ingredient is the same.
Only trick is that the baby does not like the taste, so giving it to her is unpleasant (by the way, you should buy a small medical oral syringe of 2.5mls instead of the big one that comes with Dentinox; you then make sure the baby is lying back (not upright) and aim the syringe towards the wall of the mouth, through the corner of the mouth, and give Dentinox in 3 or 4 goes.
Or you could prepare a 30 or 40mls bottle of expressed breast milk and mix the Dentinox in it and give her that before the feed, she will not notice the taste.