Im 40 and did a natural unmedicated ivf cycle. in the egg retrieval, there was no egg inside the follicle. everything was looking good, but follicle was empty. this was my first egg retrieval. what could cause empty follicle? how to improve that?

At "40", using "egg retrieval" for IVF fertilization, the timing of the "egg retrieval" process usually depends on an ultrasound determination of a large ovarian follicle, which may not contain a mature egg. At "40", eggs are aging and may not be contained in the ultrasound determined follicle, and ovulation induction meds are necessary to present multiple follicles for successful retrieval.