Reacurring dream need help to find out what it may mean?

recently my baby brother died and we had an open coffin funeral ever since the funeral ive had this recurring dream that im in a forest in broad daylight with my nan mum ETC then suddenly everything goes dark i see my brother in his coffin then im running in darkness through the forest stumbling over i end up on the estate i grew up on but its different cause my family are all dead impaled to the walls dripping with blood than it ends and i wake up crying and sweating alot what could this mean??