hi,
the older generation believe bird's nest is good for you esp during pregnancy - great for general well being, relieving fatigue, clear skin etc, I took it through out my pregnancy only because my mother and aunts bought stacks of it for me! The older generation will say of course home made bird's nest is better than the prepack/store bought ones as they add preservatives...also you have no control over the quality of the bird's nest used. Personally, I found it very helpful esp in the last trimester when I was so tired all the time (and could never get a good night's rest), many of my GFs told me my skin looked better during my pregnancy than before but there could be other more scientific explanation for that!! : ) do note that in recent years, I've been told they clean the bird's nest by bleaching it so I'm not too sure the long term effects of this........have a wonderful pregnancy!