Exhaustion causing panic attacks?

Is this possible? I'm so tired by the end of the day that my head feels clouded and my ears are ringing. I'm unsteady and my chest is heavy. It makes me panic thinking about it, but I can't help but think about it because it's happening to me. Every twinge sends me into a panic. I'm sitting here trying to breastfeed my 4 weeks old, but he won't stay awake and I'm crying. Someone tell me this gets better.