Car using a lot of oil leaking it

If the concern started right after an oil change, my first look would be for one of the 3 following issues: 1) Is the oil drain plug loose or leaking? 2) Is the engine oil filter leaking? Could be that there is a "double gasket" situation - where the old filter's gasket stuck on the engine and is not allowing the new filter to seal properly. 3) Did you just have a "messy oil change"? An oil change performed where draining oil pours onto the undercarriage could allow oil to continue dripping from where it collected underneath. Seek help from where the oil change was performed, or if someone personally did it have them recheck all areas.