Yes, if you like to jog, there's no need to stop during pregnancy. Walking, jogging, and swimming are all considered safe exercises during pregnancy.
You will need to be more careful during pregnancy. Certain changes, such as loosening of ligaments and changes in weight distribution, affect balance. But these changes don't rule out exercise for most healthy women with uncomplicated pregnancies.
Exercise will get harder as you get further along, so you may want to gradually scale back on how often and how long you jog. Even expert runners cut back as pregnancy progresses.
Be sure to stay hydrated and use the "talk test" to make sure you don't overexert yourself. You should be able to carry on a conversation while jogging.
Pregnancy is not the best time to start a strenuous activity. If you've been largely inactive before getting pregnant, ask your healthcare provider to help you plan an exercise program that leads to at least 20 to 30 minutes of moderate-intensity exercise on most days of the week.
You should also contact your healthcare provider for specific guidance if you have certain medical conditions or pregnancy complications, such as heart disease, pregnancy-induced hypertension, preterm labor, placenta previa, or preeclampsia. You may be advised to avoid strenuous activity. You'll also want to ask about the right level of activity for you if you're carrying twins or other multiples.
If you're a competitive athlete, work closely with your healthcare provider to develop a personalized exercise plan. Hormonal and weight distribution changes in pregnancy are likely to influence your athletic performance.