The five factors which determine when you get pregnant include ovulation, mother's age, sperm count, fallopian tube patency, and sex timing.

The five major factors affecting your chance of getting pregnant are:

  1. Ovulation
    . With irregular or no ovulation (anovulation), you cannot get pregnant.  
  2. Mother's age. The older you get the lower your chances getting pregnant. Old and bad quality eggs make getting pregnant more difficult. The older the woman is, the longer it takes to get pregnant.
  3. Sperm count. The less sperm he has, the longer it may take to get pregnant. With an abnormal count (that is, below 20 million/cc) your chances getting pregnant are quite low.  
  4. Patency of your fallopian tubes. They must be open and working well for you to get pregnant.
  5. Timing of sex: You must make love regularly every weeks 2-3 times and especially during the 4-5 fertile days and the day of ovulation.