ahhh smart thinking.. try talking to legal gear or just look up the ingredients of t-911 and cross reference with a pregnant manual. I know my wife had a book that listed TONS of drugs and herbals and listed how it effected a pregnant or breast feeding mother and the level of risk associated with each one.
Oh and from personal experience, pregnant woman tend to get very horny at times..

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If you cant get a answer I can try and look up the ingredients in the book for ya