I have a 98 Chevy LUMINA. fI started having to jump it off basically every morning so i replaced the battery. I didnt have to jump it off for about two weeks and then it started again. I had the battery and alternator checked thryer both fine. I dont know what to do.

For starters, unhook the battery when you shut the car off, and that will stop the battery drain. You will need to find a really good mechanic who can trace the short you have in your electrical systems.
You have a few systems on your car that draw current all the time. Probably one of these is defective.
If you have a radio that has a green light telling you the time, this could be one.
If you have an electric fan that runs when the engine is off ( and the radiator is hot) , this is one of those systems.
If you have an aftermarket amplifier hooked to the radio, this is one of those systems.
Although you already had it checked, the most common cause of your problem is a defective voltage regulator that is inside the alternator.
God bless your efforts.