Puppy, I have an "unexpected" grand-daughter, and although it was a little bit rough, NOW I have this AMAZING baby who fills up the entire world with light! She "wubs" me so much, and although I am only 42 years old, I am "grandma". Where at first, you cringe at the thought of anyone calling you this, once it is truly a little bit of heaven saying it to you, you actually delight in it! My friends all tease me - "ha ha, GRANDMA!" - like I should duck my face in shame. But they have no clue what an honored position this actually is in the life of a little angelic human being who thinks you are the sun and moon.
You will go through rough times but in the end, will be a happier person!