I am on day 16 of my raw vegan journey.. When I am not eating (like in the middle of the night or in the morning) I get very nauseous. The nausea wakes me up at night. Anyone else experience this or know why it happens? My stomach feels completely empty although I'm eating around 2500 calories a day, I eat right before bed and I am reaching pretty much all of my nutritional targets. I also feel light headed like I haven't had food in days.... I have started drinking a little apple cider vinegar in a glass of water every morning not sure if that is the cause .... The only time I feel good is when I'm eating or just ate.