EBF 15w old baby suddenly waking up crying (gas pains) 2hrs after dream feed.

This started about a week ago and is making us all miserable. I’ve tried burping her after feeding, I’ve tried burping her and doing bicycle legs and massaging belly when she wakes up, I’ve tried feeding her again.

Basically she wakes up 2hrs after the MOTN feed crying and straining and takes almost 2hrs of soothing to get back to sleep. Please help!