Advice please!

Hello mamas! My baby girl is about 2.5 weeks old and for the last few days has been grunting/pushing/squirming constantly. She looks constipated but is having plenty of diapers and normal stool. She's exclusively breastfed, and we've been giving her the Mary Ruth Organics probiotic since a few days after she was born. She's 6lbs6oz, so I can't give her gripe water yet, as that requires her to be 7lbs. Any advice on what I can do to make her more comfortable?