Let me just say this- you know what is best for your body and your pregnancy. Not your doctor. It sounds like you have a really reasonable exercise routine, and unless there is some history you are leaving out, there is absolutely NO reason to stop it. Find a doctor that you can talk with, because either way, she has no authority to tell you "NO", especially with no explanation.
Trust your gut, use your instincts and find a care provider that respects you and your choices. She is not in charge of your pregnancy, you are. She should be honored to walk beside you on your journey....but then she'd be a midwife:)
Good luck and wishing you strength and confidence-
Maryn
Bella Online Pregnancy Editor