FTM/ Overreacting ??

Ashley
My baby girl will be 3 months on the 7th, and shes been super fussy lately and used to throw up huge amounts when she was first born.  We changed her formula about 2 months ago to, Enfamil Gentlease (Recommended by her doctor) because she had horrible gas pains and for the throwing up problem. The formula seems to be making it worse, she seems like she is always miserable, and still has horrible gas. Her doctor said its normal but i feel like its something more. We have tired gas drops, and they seem to help a little. I was wondering if any other mothers out there have experienced this with their LO. Any remedies work to help with the gas pains!? I feel horrible, because she will scream her head off in pain, and let out some huge farts that seem to hurt her. Any advice will be greatly appreciated!