HELP!!

As a parent I'm at a loss.... total and complete loss. I have NO idea what to do with my baby girl, and it scares the life out of me....

Since Matt was working late tonight, Katherine, Caleb and I went out to dinner with my parents, sister and Morgan. Both Katherine and Caleb ate a great lunch, and since it was super early, I didn't think twice about the fact that neither one of the kids ate much. Heck, I didn't even eat that much....

When we got back to my parent's house, Katherine and Caleb were running around and playing with Morgan. Literally, they were running. Oh, and Katherine was playing gymnastics instructor to Morgan. Matt stopped by on his way home, and we ended up leaving around 8:30.

We got home, put the kiddos in their jammies, and gave them a snack. Katherine wouldn't eat. HHHMMMMMMM.......

Fast forward to 2:45 am. I am jolted awake by Katherine screaming at the top of her lungs and running for the bathroom. She puked everywhere. Literally it was everywhere. I had to give her a bath and it took Matt the better part of 45 minutes to clean it up.

What on earth is going on? She's throwing up every other day or so, and sick for the entire next day.... Both Matt and I are praying it's the flu, but it just doesn't seem to fit.... So after a panicked call to my mom (she's good at 3 am LOL) to see what she thinks, I think that I'm taking her to Dr. Jon tomorrow. If it were the flu, wouldn't Caleb have gotten it? After all, they've been known to share a glass at times.... And it's not food poisoning or anything crazy like that. I'm soooo worried about her. This has been going on for far too long.