It is very interesting!! I remember someone a few years ago on the over 40 board who tried a STOP lupron cycle and she was too suppressed. Ch.eck ended up having her stop all meds and her FSH and LH started going up from the "rebound" effect of stopping lupron, but her E2 started going up and she ended up ovulating unexpectedly over the weekend with a follicle that was supposed to be too small to be mature. But she got pregnant with TI and had a healthy baby. I remember being fascinated that her LH was over 20 for a while before she ovulated, yet the egg was obviously fine.