That's very interesting! Because I also used to get the same reoccurring dream as a child right before I would get sick, but no longer get this dream.

In my dream, there was a Totoro like creature in the middle, just its head, opening its mouth very wide again and again in a spiraling like motion that was very repetitive and frustrating. Then toys would fall to the floor and I had to pick them all up. I also had a feeling of my back being against a plank during this dream.

I think there's a similarity of frustrating, spinning and repetition in both of our dreams that might've signified that our bodies were sick before we knew it.