I think I might lose my mind!!!

Charlee • Mommy to a beautiful baby girl. 1.08.2016 Trying for baby #2.
My 16 month old is driving me up the wall!! Defiant, hitting, scratching, crying before she goes down for her nap when on a normal day she goes down without a peep! I feel like crying every second this week!! Terrible twos have already started around here 😩😩😩😩