Dreaming of cockroaches can symbolize feelings of disgust, fear, and anxiety. The large families of cockroaches crawling out of folds and small spaces may represent hidden fears and insecurities that are coming to the surface. The presence of your brother and grandad in the dream could suggest that these fears and anxieties may be related to your family or childhood experiences. The repeated sightings of multiple cockroaches together may also indicate a sense of overwhelm and feeling outnumbered by your worries. It is important to pay attention to the specific locations where the cockroaches are appearing, as they may represent areas of your life that are causing you stress and discomfort. This dream may be a reminder to address and confront these issues in order to find peace and relaxation in your waking life.