I think you can eat whatever you want to eat (of course not harmful to bb la). Because my experience and problem was: I do not want to eat anything but I felt hungry. I tried to eat but vomiting whatever I eat! Just do or eat anything that make yourself feel better la...
But I think you can just try a little bit 酸野 to see if it makes you feel better. For myself, it got worse and I vomitted more serious when I ate sour things... Pregnancy is very interesting... everyone has different reactions... you can feel it... but no worry... soon you will feel better... take care!