Grieving Father’s Death

I lost my father August of 2009. He left to his native Mexico on his birthday to get treatment. He passed five days later. He was an alcoholic and his body stopped functioning. I was unable to fly to his funeral I was three weeks away from giving birth to my son. I feel as if he is still over there even though I know he has passed. I feel as if I haven’t been able to grieve. I feel anger and resentment because my entire family were able to be there. I feel as if I’m the only one in denial. I don’t know how to come to terms with the grief that I feel is somewhere deep down inside me.