A stampede is read as panic that spreads, or emotions that run out of control all at once. Dream tradition links it to feeling swept along by pressure from many sides.
Has this come up in your dreams before? What was going on in your life then?
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.