FTM with fussy baby NEED ADVICE (update)

So my baby is 3 weeks old now. She is an amazing baby literally only cried when she was hungry. For the past 3 days she has been uncontrollably fussy at about the same time (8pm) I have given her gripe water, but we are strictly breast feeding so I’m not sure why she has so much gas and an upset tummy (I think) she seems better after the gripe water but her poop is still runny ( again I know breastfeeding she will have runny poop) but it’s a little more runny than normal. She isn’t running a fever and is only upset or fussy at this time of night. Throughout the day she is her normal happy self. Any advice on what is going on, and how can I help reduce the gas in her tummy? we burp after every feeding and have tried the bicycle legs, and gripe water. Oh and here is a pic of my beautiful baby girl. Aliza Raye, 3 weeks old today.

UPDATE

So this morning her first poop was like water and her next diapers were around the same consistency. Making an appointment to see her doctor tomorrow. She isn’t having more amounts of dirty diapers but they are just like pure water. I’m starting to think that it’s something I have eaten that is effecting her, but I haven’t eaten anything out of the ordinary. I can’t think of anything I’ve eaten in the past 3 days that would effect her except dairy products (milk, cheese, sour cream, and pasta) Sorry for the gross pictures but these are two separate diapers.