Why is my car overheating?

1998 Honda Civic Ex
Its not the radiator because I recently resolved all of those problems before it started overheating now. The temp gauge rises to the H while I m stopped, driving and on the highway within 5 min of starting the car. White smoke comes out barely from underneath the engine. Looks like a hose by my splash guard. I recently change my upper hoses and added oil but no oil change in a long while. I m hoping it s not a blown head gasket. I know the car needs a oil change, New gasket value coverings, power steering fluid, and also a New o2 sensor. Any other clues. I see no signs of a leak but I do smell burning oil when I drive. Please help.

Read more: Why is my car overheating?