viewquek SG If the cough is gone, eat as usual. U will gain back your weight in no time. By the way if coughing can lose 4 kg in such short period, alot of girls don't mind having that kind of cough.
aiglosicicle SG how come so many people post health related problems on online forums? haha i dont get it. if you suspect that something is wrong.. go see the doctor. no one here can help you