Baby only relaxes on tummy

Alison
Hi all!! My daughter is 2 weeks old and we are already on our 3rd formula. Doc put her on similac allementum yesterday and she's using gas drops as well. She has a hard time burping but def has a lot of gas that she is able to release and is regularly having bowel movements. U can actually hear the gas in her stomach, I feel so bad. I stay up with her and put pillows on my lap and lay her on her belly. It's amazing she stops crying almost immediately and she falls asleep but as soon as I pick her up to put her to sleep on her back she's up crying again and looks like she's in pain. I feel so bad and hate to see her uncomfortable. I'm hoping this new forum last does the trick. Any other experiences with this??