I have a ck level of over 1800, should I be worried?

I am a 35 year old, white male. 5'8" tall and in very good shape. I workout 2-3 times a week, work 3rd shift as a manager, walk around ALOT, have 3 beautiful girls and a hot wife, plus I am going to school. I get dizzy spells, do not sleep soundly, tired, muscles and hips are sore, and I am worried about the blood test I took recently. 3 weeks ago I had a blood test with a ck level of over 700, now 3 weeks later it is over 1800! I had a MRI and I am getting an EMG on my right leg this week. My doctor told me if my symptoms worsen to go to the ER. Can anyone help me with what might be wrong and what should I do?