Extremely low energy

I have always had issues with no energy, and because of it I was diagnosed with depression at 14. I have been on every anti depressant there is with it not helping at all, any time. I now have a 3month old and my energy is at an all time low. I'm DRAINED, but unlike before I can't just sleep. I don't know what to do. My OB set me up with a psychiatrist but I'm afraid they are going to try to put me on another anti depressant when I don't think I have depression at all. Has anyone else had this problem, is there a different medicine they can give me for energy?

I'm at my wits end, my energy is so low that I'm afraid to drive with my daughter in the car because I get so sleepy on the road.