Hi. My 2 year old little sister drank from a cup with a little bit of clorox in it. I know she didn t drink a lot, considering the cup was nearly empty. But she started coughing a lot and threw up a little, so I gave her milk to drink, then she drank warm water ..then more milk. She seems fine for 2-3 hours and eventually fell asleep. There s no sign of her in pain, or bleeding, should I be worried?