I feel like my heart is caving in on itself...i miss my daddy so much. how can i cope?

my daddy ped away 2 months ago(july 9th, 2010) and i went to go use a flash drive on my desk that i thought was my boyfriends, but it was actually my daddy's. i went through a few files and before i knew it i was crying hysterically. i've been crying on and off now for almost 3 hours and i feel like my head is going to explode and i am so overwhelmed by emotions i feel like my heart is going to cave in on itself. i thought i had this under control. how can i cope with my father's death? i was there with him through his entire illness more than anyone else. all i want is to speak to him again, cook with and for him again, hug him again. i miss him so much its almost suffocating and i dont know what to do. how can i help this get better?