This dream of yours is actually to remind you not to reveal your heart to others too much, so as to avoid an irreversible situation that you can't pull it up. Maybe you have met some strangers now, and you are faced with the dilemma of whether to express yourself or not. Basically, your heart is quite conservative and independent.
Finally, we can't break bad luck with our dreams. Dreams are just your conscious activities, and there is no evil or good luck. Just as you dream of killing people and having children, you can't predict your future at all.