When I make sharp turns my oil light pops on, what could this mean?

My change oil light has been on for about 2 weeks, I plan to get my oil changed very soon but when I make sharp turns or turns that I have to turn the wheel all the way an additional oil light comes on that looks like an oil can with a drip. What would be causing this. It only happens when I turn the wheel all the way. Is this a bad thing? I have an oldmobile alero…just looking for your thoughts. About 2 months ago it looks like I was low on oil so I added more to it..maybe to much?