no meals, baby okay?

Due to day and night sickness, loss of appetite since i reach 2nd trimester i dont eat. i can go by a day without eating anything, my stomach will growl but i cant seem to have anything since my throat doesnt want to accept. but im starting to worry, will my baby be okay? should i go to kkh and explain to gynae my worries? even for my prenatal multi vitamins i do take them everyday but late, about evening time.