Will an hcg shot release immature eggs too?!

I was taking clomid to achieve pregnancy and had a day 12 scan that showed three eggs 1@16mm and 2@9mm!. doc gave me a hcg trigger shot to release eggs early!. does this mean i have three chances to get preggers!? i have heard that 16mm is mature meaning I only had 1 good egg!. does the hcg shoot release all eggs or just mature ones, i am not supposed to ovulate for 3 more days, do you think the other two eggs will relase when I "o" or did they already release!? i am confusedWww@Answer-Health@Com

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