But there are some factors that can affect your chance of getting pregnant:
- Age. After you reach age 30, your chances of conceiving in any given month diminish, and they decrease as you age, dropping steeply in your 40s.
- Irregular menstrual cycles. Having an irregular cycle makes it tricky to calculate when you're ovulating, thus making it difficult to know the ideal time to have sex.
- Frequency of sex. The less often you have sex, the less likely you are to get pregnant.
- Amount of time you've been trying to conceive. If you haven't gotten pregnant after one year of trying to conceive, your chances of becoming pregnant may be lower. Talk to your doctor about tests for female and male infertility.
- Illnesses or medical conditions can affect pregnancy.