Why am i feeling like this??

I’m 7 weeks pregnant and i’m not always hungry like every other girl. When I eat, I get bloated and sometimes nauseous. Is this normal? I see everyone craving and eating so much and I went to eat two slices of pizza and got super bloated and couldn’t finish. Is this normal?? I feel like i’m the complete opposite. I’m also craving nothing at all. All I wanna do is sleep.