BF my 2 week old

I feel like my 2 week old is obsessively eating. She use to eat every 3-4 hours throughout the night and now all of a sudden she’s eating every 30 minutes - 1 hour. It also seems like she has stomach problems she’s peeing a lot but she’s not pooping as much as she use to. Every diaper change there’s just little traces of poop she had one good bowel movement today but it wasn’t to much. I’ve tried some gripe water but it doesn’t seem to work. Why is she eating so much ?