Your baby may not be tolerating the medication, or his underlying condition may be worsening in spite of the medication. His doctor cannot possibly provide good care unless you stay in touch with him. I would be happy to answer questions about the medications or about reflux, but it would not be in your son's best interest for me to direct or interfere in his care by e-mail. From your description, your son sounds like he has significant gastrointestinal problems. If your doctor does not or cannot provide adequate ongoing care for this, you should consult a pediatric gastroenterologist.
Intussusception is a serious problem which requires emergency care.
If your son is in a lot of pain or has bloody stools he needs immediate medical attention. I am at my wits end concerning my 13 year old daughters hair. When she was born she had soft curly blonde hair. About a year prior to entering puberty her hair texture changed dramaticly over a couple of months. It is now extremly coarse, like a horse's mane.