I'm 9 weeks pregnant and do regular aerobics and weights exercise. Can I keep doing it?

Just pay attention to your body and adjust the intensity of your exercises. Keeping yourself active is good for you and your baby. It also helps keep your mood up. For weights training, pay attention to your form and do not over strain your body. You will likely need to train at a lower level that you ate used to. For aerobics, as your pregnancy progresses, adjust the duration of your session as you sees fit. Do remember to keep a balance and healthy diet. Consume enough calories to ensure that you and your baby are getting enough nutrients. If you find anything amiss, always consult your doctor.