IVF day 3 estrogen blood check

Terra • Married to my Mr. Right. Mom to my IVF heart warrior daughter born November 16, 2017.
Started stims feb 17 have done 3 days of them my baseline estrogen was 158 went for just blood work today after 3 days of stims and my estrogen went to 517! Should I be worried about that? The nurse called me after my blood test and said I was responding very well to the meds and that the Dr wanted to see me tomorrow morning (Tuesday) instead of my reg scheduled appointment on Wednesday for ultrasound and blood work. Should I be worried?!? Is my estrogen level to high? I have PCOS Or is this all a good thing? I'm so nervous now. I had 12 follicles on my right and 9 on my left when I was at baseline. Any input would help. I'm worried about tomorrow morning.