Extreme food aversions

My first pregnancy I had cravings, but it seems this one I'm the opposite!! Everytime I get hungry and think of food I get sick to my stomach and feel nauseous. I'm having to make myself eat because nothing sounds good to me at all. Every food just makes me gag and feel sick!! The only thing so far that I've found i can snack on are my sons animal crackers. Hopefully this is over soon because it's awful!