Me too... under stress and feeling anxious lately too so I couldn't figure out if my symptoms were more stress related or overtraining. I am just finishing up a high volume routine and don't feel exhausted from it but can't imagine why my body isn't like "hold up baby!"
When I was overtraining before I felt a constant dull ache in my legs that would not go away. I thought it was from dance but it was from overtraining. You'll definitely feel off - overtraining comes with symptoms.
You need a day off though!!! Your muscle growth happens at rest. You know that