oil,My car is leaking oil i got an oil change for it last month but it is still leaking oil what will cause my car to leak oil ?

My car is leaking oil ,I got an oil change for it last month to see if that would stop it but unfortunately it didn't it seems like I have to put oil in it every day and my check engine soon light is on what could this problem be I also can smell oil burning when I have my heater on .

My car has 101000 miles.
My car has an automatic transmission.