Stressing out!

My mother in-law doesn't want to let me make my ob appointments where I want!! 😡 She wants me to go to the same doctors and hospital that her kids were born at! I tried to switch prenatals and she hid them from me!! My hubby tells me just to blow it off but it's pissin me off! She already told me how she would be taking our newborn and going to the other side of the state for three weeks! I can't think someone please help