Talk to your doctor. If it has a warning label, obviously discontinue it! The thing with herbs and other natural remedies . . . they interact with our system just like drugs do. Being natural or herbal doesn't mean they have no dangers. So, I wouldn't take anything unless my doctor okayed it, herbal or otherwise. And then if you have been using it since pregnant, just let your doctor know. good luck!
Yes, just talk to your doctor. Things like that are tricky because they aren't tested or studied on pregnant women.