I can't eat!!

It almost feels like I force myself to eat sometimes , but today I just can't. I'm 8 weeks tomorrow and I just don't seem to have an appetite , whenever I'm sick (have a fever) I don't eat for 2 days straight I maybe drink orange or apple juice but I just can't do it and that's what it feels like right now. I was at work all day without eating anything and I felt horrible I felt bad that I hadn't eaten anything so I stopped to buy a small buger. 4 hours later I'm hungry again and just thinking about eating makes me sick. The only thing that catches my mind would be slices of green apples but I don't have any right now. Does anyone else feel like this?? How do you get over it??