Laurie, others have said what I've thought and wanted to say so all I'll tell you is now you can feel the weight lifting and cherish all the good memories. There will be many unexpected triggers that will bring your father back and they will wash you in comfort.
My daddy died in 1973 and, even now, every time I see an historical marker at a state or national park, I smile and feel him nearby. He loved our country and took every opportunity to make sure we children appreciated it. In time, these markers became known as "hysterical" markers because of his enthusiasm.
See, I'll bet you're smiling, too, because there will be similar occasions when your father will be there.
Take care of yourself.