As a feminine container and one that can carry clothes, it may reflect some aspect of your out or inner identity and or a challenge to it. Pregnant women dream about finding or losing suitcases as reflections of their changing identity. Also it can mean what one carries inside, such our emotions, longings, attitudes and fears.  It can be symbol of independence, traveling somewhere. Also luggage and suitcases are sign of status and how we see ourself.