plexxx

My car is leaking a few drops of oil each day. I finally looked under the car tonight and saw a lot of oil on the botton of the car. Some of it was on the plastic underbody but when I placed my hand behind that I found a lot of oil. I don't know anything about auto mechanics and don't even know how to change my own oil so I can't be any more specific. The leak is more toward the drivers side of the car. Anyone know what this is? Is there supposed to be oil there? I made an appointment with the dealer but it's not until next week.

Thanks in advance