food aversions

I am experiencing food aversions. I am 7 weeks and 4 days pregnant. I dont have any cravings and I always feel like vomiting everytime I see any kinds of meal. I always end up eating only fruits and biscuits. Whenever Im hungry, I just take some water cause I really dont feel like eating anything?? is it normal? Cause most of the post I've seen, they're always hungry and always wanting to eat and they know what they want? unlike me?