Not sure about the actual facts but any medication while pregnant could be harmful. Have you tried looking at the companies actual site? Or what about talking to your pharmasist or pediatrician?

I have spoken with several different people. They say to avoid use mainly during the first trimester.

You need to talk to your dr about it. Some people the affects of not taking the pill is worse than taking it. But like I said to only story you should beleive and follow is what your dr says.