Is this normal?

Okay so my daughter is 2 weeks old as of tomorrow,(the 12th) and for the past about 3 or 4 days she's been suuuuper fussy and not sleeping the best... she hasn't been eating much, about an ounce or two every 4 hours as opposed to always eating 4-6 every 2-3 hours.. she puked up 2 ounces after I layed her down to sleep.. she'll sleep for like 10 minutes then wake up and start screaming for no reason, nothing I do helps... what should I do?? I've given her gripe water but she's still cranky :/ and she also can't or won't stop sneezing.. at least 5 sneezes in a row and they take her breath away