Estrogen levels question for anyone doing/had done ivf

Zara

This is my second round of <a href="https://glowing.com/glow-fertility-program">ivf</a> with a different clinic, I’m doing a frozen cycle and I just started my stims I am on follistim 300iu everyday and today is my 3rd day my estrogen level is 135.5 after 3days of follistim 300 iu is that normal?