Appetite issues

Hailey • Kinley Sophia was born in July 2015 and Theos Aiden born January 2017
I am 17 weeks and for the last 2 days I have had issues with my appetite. I am so hungry it hurts and makes me sick from not eating but if I eat something it's a few bites and makes me feel sick cause I don't want it. Nothing sounds good at all but just one thing. I live pretty far from a fast food joint or a store. Is this something that's going to continue?