She is 15 and she has a lot of gas and her tummy is rumbling something terrible..all she wants to do is sleep ..all day! I gave her Mylacon which is for infants with gas and it doesn't seem to help i also gave her famotidn for her upset stomach, but nothing seems to help..and i am concerned that she just wants to sleep..at 15 i worry about her..may not seem like an emergency but she is sick..Please give me some advice..Thank You: