Swaddle, cuddle, bath? Baby might be too warm/cold? Sometimes I just put my baby in his swing and he's fine for a while. Almost as if he just wanted to be left alone to look around
If her tummy is hard I scrunch her legs up to it to try and push the gas out...also a warm bath and cuddling helps her and if all else fails I put her in her swing with her cloud b giraffe playing some white noise