Nothing close to this should be considered normal. Check your calorie and carb intake. Ketosis increases cortisol, which can be stressful. You need to eat ~50g/day of carbs to stay out of it. You’d still need around ~100g/day of protein to maintain lean mass on this carb intake; more if you’re active. Low calorie diets are stressful in general. Vegetables can be filling and fat/protein is more satiating than you may realise, so actually count calories for a few days to see where you are. Go easier on the anti-fungals if you feel it’s die-off related.