Growth spurt or colic

Literally a day before my LO turned 6 weeks she started acting different & has been up until today. In the morning she only eats a little since she falls asleep & I try doing little movements like I was taught at the hospital but nothing works so I just let her sleep. She wants to he held all the time & she was never like that. As soon as I put down she doesn’t last long until she’s crying. In the afternoon she gets a little bit more difficult, she cries so much. She eats way more than the rest of the day & when I think she’s full, she starts looking for food again😓 the only wonderful thing is that she’s starting to sleep more throughout the night. How do I know if it’s normal or colic?