@Kytackett,
I didn't mean googling about your fears (which are understandable) and making yourself think you are pregnant.
I meant google information as to the morning after pill and when you can take a pregnancy test.
As far as if your head can make you believe, you already asked that, and I answered.
How likely is that?
Now how in the world would anyone know in your particular brain how likely that would be?
Do some intelligent research, found on valid medical sites. Not sites where other 17 year olds are sharing all kinds of mis-information.