moody, bitterness

am kinda moody and having a feeling of depress..
my parents were back from Aus yesterday and I quarrel with my dad yesterday night.
For me, is really a serious quarrel.
My personality is I'll forget those people who hurts me or even those uncomfortable feelings will gone after I woke up from bed. This time is being different.
I can sense that he's angry with me.
I woke up from bed when he gone out, I on PC after he came back and he didn't even approach me. This is so not his personality.
I don't mean to hurt him unfortunately am a human being after all...
am totally lost and I don't even know how to apologize..
I should but how am I going to tell him.
Is kinda tough for me :(
my heart is full of bitterness...
HOW?!
I scared to face him now..