I need help please from someone........anyone.

My daughter has never been a great eater but over the last two weekes she has gotten worse. it is a huge struggle to get her to eat any solid food and is now going off her bottles as well.

Any suggestions on what i should do. do you think i should take her to see a doctor? she went 8.5hrs with out a solid feed or a bottle, surly this cant be normal? is it?

any advice would be a great help.