I had CD3 bloodwork run in November and also had an estrogen level over 150, FSH was 6.7. My RE asked that we rerun it during my next cycle. His reasoning was that if it was still high, it was most likely a cyst that he would diagnose through ultrasound.
My re-run number this month was much lower (58, I think?), FSH was 7.1. I haven't spoken to him yet to find out what's next. Like you, I am a little worried.