IVF high number of follicle, not many eggs

Hi, I just did egg collection yesterday and to my surprise, I had only 8 eggs collected from 19 follicles. These are the measures of follicles on the left ovary on day of trigger L: 8, 18, 13, 18, 13, 13, 8, 18, 9, 14 and only one egg got collected from that ovary (other 7 from the right side). Has anyone come across such case before, very few eggs or no eggs collected from one side? Any idea what could have gone wrong? I didn’t have any issues nor surgeries on that ovary in the past. Let me know if you heard of something similar happening before!