Are they in the Recycle Bin?
How long ago did you do it?
What have you done on your Lappy since?
If not in the First Place and you have done little on your Lappy since ~ Turn it off and don't touch it until you are ready to do the following.
Go to another PC, download Recuva]1 to a USB Key and then fire up your Lappy and run Recuva, before you have done anything else.