My question involves a child custody case from the State of: PA

My soon to be ex wife and i got in a fight today and now she isnt going to let me pick up my daughter. I was suposed to pick up my daughter in a week and a half. She is now saying she isnt going to let me pick her up. At this time there is no paperwork thus no court set custody. I am in the military and have to drive from washington state to virginia to pick her up. Its not easy for me to get leave so i was hopeing that someone could give me some advice as to my rights to my daughter