If I understand correctly, you weigh less than 50 kg. I don't know your height and hence cannot determine if the weight loss is ideal or not. From your symptoms, I suspect that you might have developed nutritional deficiencies. You should not compromise on nutritional dense foods while trying to lose weight. Please get your
B12, Haemoglobin and
Vitamin D levels checked as soon as possible to avoid further malnutrition to set in.
Next Steps
Get your deficiency tests done. Meanwhile, include a lot of nutritional dense foods in your diet. Have 8-10 almonds/2 whole walnuts daily. Add a teaspoon of toasted sesame seeds over your food. Add lemon to salads.
Health Tips
You need to see a qualified nutritionist at the earliest to avoid further malnutrition to set in.