suicide hint from a dream

its kinda depressing this dream i had.

~the dream~

i was with my mom n brother.
in the dream.. i was thinking of getting knife. small.nice.sharp. i was feeling depressed.
in my dream, my bro was constantly throwing his temper to me. my mom kept quiet by the side silently helping him although i did not do anything wrong. anything dat went wrong for him, i got victimized.
then my bro suddenly asked me what i want to buy. i told him a nice sharp knife. i dun remember wat he said here, but i remembered him agreeing n drove his car out of the parking with my mom. he just suddenly drove so i had to change clothes to follow. i put on my contacts, i changed clothes i walk out. but i found him getting more n more impatient although its only 5 mins. he went in the car n proceed to drive off. i felt left behind. i felt sad. i really find no reason to live anymore at that time.
as i broke down, he drove back n pulled me slowly towards the car as if he is guilty. but he's driving us all to help me choose a knife that i can cut myself with... feeling shocked n sad n depressed... i woke up...

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i'm speechless with this dream. wat does it mean?