What constitutes early or late ovulation? Does late ovulation decrease fertility?
There is not complete agreement on this. You might consider “too early” to be cycle day 10 and “too late” to be cycle day 20. There are two problems with late ovulation. The first point is that you obviously you have fewer chances (less ovulation) over a given time period. Second is the fact that with late ovulation you may be releasing eggs that have not been matured properly. It is also possible that the other parts of the reproductive system (hormone levels) are not in sync with the egg. That is not to say you cannot conceive if you ovulate late—it happens all the time. It is just that your chances are somewhat reduced.
