Low sperm count/ ejaculates quickly my fiance and i are trying to have a baby and sometimes when we have sex he ejaculates a lot and sometimes he doesn't i was wondering does the amount of sperm he produces play a factor in how much it is? when he ejacula

There : There is no clear cut answer here. The reason being is because ejaculate is made of other things besides sperm(mainly glandular secretions), therefore it is difficult to make an assumption of what percentage of each ejaculate is sperm regardless of the quantity. The bottom line here is that there are millions of sperm in each ejaculate, therefore i don't think the number of sperm in any amount of ejaculate will be an issue. However, if you are unable to get pregnant after a year of trying you both should have an infertility work up, which would include a semen analysis for your fiance. Best of luck.