When ever my car dies for some reason whether it be I left a door open or the lights on or if I disconnect the battery I can't just jump it and have it start.

I have an exhaust leak so I disconnected the (-) so the CEL would go off. I did this a few times and everything was good. But recently whenever the car dies I can't just jump it and have it start up again. So then I thought it was a clutch safety switch. Two times I have just wiggled it around and the car worked after I jumped it. But now it is still not starting.

I have full electricity but the car just doesn't start. There is no clicking (like a dead battery)

Now Im thinking it might have something to do with a security/anti-theft thing. Because the light on my center console is blinking. If anyone has any idea of what is wrong or needs some more info please tell me.

The car is a 99 cougar. And the battery in it is about 2 weeks old.