My baby is 18 month old.. He usually eats without much problem.. but from last one week he is not eating much . Also last 2 days not eating anything. He is crying even looking the food... We tried different types of food . But he doesn't even taste that..Also his molar teeth is erupting. We don't know what problem he is having. We gave medicine for stomach pain also..We don't how to make him eat . He only likes watermelon. . What we have to do to make him eat?