Gas pains

Anne
For the first month of her life my baby spent the evenings crying with severe colic doctor and everyone said only time will make it better, we tried every ol wives tale I've heard nothing really worked now at7 weeks colic is a bit better but has very bad stinky gas and cries out when she farts she is on formula and we have tried a couple of different ones today I decided to go with Isomil similac soy based formula has any one had this problem and seen a difference with Isomil??