If my lmp came 3 days sooner than expected and was short. 3 dayslong. how does it effect ovulation. suspected at cd11. chances of this?

Luteal phase defect: Lots of possible explanations. The problem can stem from diminished ovarian reserve (low egg numbers) or weak stimulation of the follicles (a lazy pituitary). Low egg numbers result in an overactive pituitary gland that triggers ovulation early. A lazy pituitary might delay ovulation with a short luteal phase. Uterine problems can also contribute. Expert advice helps in evaluating this.

Upredictable: The ovulation usually occurs prior to the menstrual period but the timing can be unpredictable. There are some studies that show the ovulation can be effected by the presence of other ovulating women in close dormitory living situations. You might consider using a home ovulation testing kit or monitoring your body temperature.