I wonder if it has a deep dream meaning. I'll look it up, Sarah style!
Underwear
To dream that you are not wearing any underwear, signifies fear that your secrets will be revealed.
I forgot to pack the underwear too...
Forgetting
Alternatively, forgetting something may represent your unconscious desire to leave that something behind...
:aimblush:
Luggage
To dream that you lose your luggage, represents a lost in your identity. Consider how you feel when you discovered that your luggage is lost. If it is a positive reaction, then it signifies an opportunity for you to start fresh. If your reaction is negative, then it suggest that you are feeling lost.
Running
To dream that you are running away from someone, indicates an issue that you are trying to avoid. You are not taking or accepting responsibility for your actions.