Happy Birthday, Bella!
Kim, journal, take pictures, take movies... time slips away so quickly. My oldest son will be 29 on the August 18th, and my twins will be 24 on August 13th. (Don't ask about the birthdays a week apart; that is another story for another day,) and I have the sweetest memories of those young years; I get all weepy and watch all the videos that week of August. I didn't journal... I wish I had; I have forgotten so much with the chaos of having twins.
When Bella is in her teens, and being obnoxious, read the journals and restore your balance. Let her read them, and she will understand, in some small way, (our children never really understand until they have a child of their own,) how much you love and treasure her.
You are both blessed.