S.M.
i read an article in mothering magazine (which can be all sorts of extreme, but has some good stuff too) about a pregnant woman who was so sick that she couldn't eat at all and was losing weight and was afraid she was going to lose her baby - she decided to start smoking a little bit of pot and that solved her sickness problem - apparently has a healthy child- or children - don't remember - i'm not suggesting that you smoke, obviously, but perhaps her (crazy) story can provide some reassurance that a bit of 2ndhand smoke will be ok.