Depo- Provera!

Larissa
I know this may seem crazy! 
Can anyone help me? 
I took the depo provera shot twice in a month....for the first time... { Different doctors... }
( Of course I lied to the second doctor about not taking it before). 
- I wanted to take (2), because I thought it would protect more....
My period hasnt come yet.... On eve it says the date before i took it... But not  i miss my period! Should I be okay?