A gentle rocking motion is linked to comfort and self-soothing, the rhythm of being calmed as a child. Rocking too hard is read as unease you are trying to settle.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.