blood in stool...now on Neocate

Kristen
My son is 2 months old this week. 3 weeks ago I found blood in his stool, called the doc and brought a sample the next day. It tested positive for blood. She gave me the alimentum, and after 2 weeks of TERRIBLE gas and his stool still being positive for blood, she gave me the Neocate. Just wondering if anyone has experience with this formula? I've read it's pretty serious stuff so I'm not sure if I should be nervous.