Good Medical Sites for Research??

Hello to all my heart family.
Life has been quite rough for Jessica and I need to do some research. Not only do I need to research medications and side effects but also diagnosis and treatment options. We are running out of options on how to bring Jessica's pain level down and her pain is getting worse. It's so hard to see her in so much pain day after day. The GI and pediatric cardiologist don't have any suggestions either.

The diagnosis is Ischemia of the Bowels amongst others. I would also like to know what all the hoopla is about the pain patch causing deaths? Or is that just the ambulance chasers trying to get money?

I need to know what websites are good for researching these types of things. All info would be greatly appreciated.

Thank you!