I dread going to work every single day

I wake up every morning and my first thought is "I don't want to go." I've been practicing for 6 years and it's gotten worse, not better. The patients are demanding, the schedule is packed, I'm constantly behind. I come home exhausted and can't even enjoy my weekends because I'm dreading Monday. Is this normal? Does it get better? I feel like I made a huge mistake choosing this career.