My dog has lately had such bad gas and its been getting progressively worse (more frequent) I don't know what to do about it. We recently switched her food from Nutro to Innova. We blended the old and new for about a week and a half and she's been on only the new food for about 3 weeks. She was not gassy when on the Nutro. Do you think the new food is causing this? Will the gas stop eventually?