Why do I have so many female zucchini blossoms?

Every year I grow one zucchini plant. Usually the first blossoms to appear are male and outnumber the female blossoms. This year I've had six or seven female blossoms and no male. The first few fruits were short and seemed to stop growing so I cut them off. I read that lack of pollination can cause this. I now have two male blossoms starting and about six female so hopefully I will get some larger fruits.