How long did you stim for?

I'm currently on my first IVF cycle - antagonist protocol.  On day 10 of stims, Doctor pushed our ER date 3 days. It was suppose to be Wednesday but now looking like Saturday.  So most likely will be stimming for a little longer than expected. My follicles are taking a bit to mature.  I'm worried it might compromise the egg quality.  How long did you stim for and any thoughts on the correlation between long stim = egg quality? Thank you!