Pregnant Powerlifter

Any pregnant powerlifting mommas out there? I've been powerlifting for about 8 months, still a newbie my previous lifts were not that strong to begin with but I don't want to stop powerlifting. If anything I think I should continue through out my pregnancy. Of course I'm not lifting really heavy and I'm listening to my body. I had an appointment today with a prenatal nurse and I told her I power lifted as she gave me a nasty look. She told me I should stick to walking and not lift heavier than 50lbs. What do you mommas think?? I have to wait until October 3rd to actually see my doctor but I've been weightlifting since before I even knew I was pregnant.