Please pray

Please pray for us, especially for my mom. At three this morning Dad had to call an ambulance to take her to the emergency room, with severe abdominal pain. She's been admitted to the hospital, and they found out that she has an inflamed pancreas, but that's all we know at this point. I don't know what that means as far as what's wrong with her, or if it's necessarily a root cause or a symptom pointing to a problem elsewhere, and I haven't had a chance to talk with Dad about it to get a better explanation from him.

Just... please pray. I totally trust God about this, and I know that He will work all things together for those who love Him. But... I'm still scared. How is it even possible to feel peaceful and trusting and have knots in your stomach at the same time?