Is it normal to feel 'tipsy' on omad?

I have been doing it for 2 weeks and I have lost 16lbs so far. My deficit is 1300-400 calories, I am 5'4. I felt great at first . But now im not hungry at all. I haven't eaten anything in two days apart from some plain tofu and energy drinks because I am just not hungry and the idea of eating is making me feel nauseous. Now I feel sort of tipsy? Like wobbly and the room feels funny. I've had issues before with fasting where when I finally eat I shake and feel like I will faint and its scary . But this just feels weird? I'm slightly shaking. Any advice? Is it my period and what happens on it on omad?