Help? my parents are loosing it?

hey this is prob more a vent than anything but also a question in its self..... sorry to bore any one. i don not know where to start really. maybe the basics im 19 i have a sister 16 and a brother who is nearly 14! i live with my parents my mum has chronic pain is depressed i have had 11 years to get use to that and accept it i guess its never really accepted but you get use to have a mum who is on medication all the time and out of it every day! but now my dad seems to be depressed! he wont talk to us etc at night we say good night love you sweet dreams now all we get from him is ok he wont hug us or anything its driving me crazy i feel sad and want to scream! i cant have to "loony" parents i need one "normal" one! i do not wat to do im stressed trying to find a job, helping around the house doing all i can and on top of that getting sick and stuff! i don't know how to cope? i talk have seen counsellors and talk about it but any ideas on how to cope or people in similar situations? sorry its So long any help woul be grately apprisiated!