The chance of spontaneous pregnancy each month is typically between 15-25%, depending on your age. By tracking ovulation, you can increase those odds to about 35% chance in one month, 70% in 3 months, 80% in 6 months, and 90% by one year. For a woman younger than 35, it’s generally reasonable to wait a year before seeking assistance whereas for those 35 or older it’s preferable to seek help after only 6 months because of egg quality changes in that age range.