I can't keep anything down in my stomach

Maureen
I'm 6 weeks pregnant just found out ,thought I had food poisoning.only to find out I'm pregnant, I'm dehydrated from throwing up continuously & also low in potassium also from throwing up, any tips on what I can eat or drink , please help? Btw I'm vegan , I've tried mints ,hard candy , ginger ale , sprite and crackers .. Please help