Still tired

I felt pretty good yesterday until around noon, then I became incredibly tired again. This is not a normal tired. This is a tired where your bones feel tired. I don't know what is causing it but I would like it to stop now. By 9 pm I could hardly keep my eyes open and I was yawning so hard I thought I was going to dislocated my jaw. What the heck is going on??? I don't know but I will keep trying to battle it. I know it will take a few days for the proper eating to kick in and work so I'm holding out hope on that. Plus I'll keep up the workouts and hope things turn around soon. Right now, even though I've only been up for an hour, I feel like I could take a nap. That is so not good.