Icylemon, I've checked with frens and colleagues and even the confinement nanny I've engaged, can start taking birds' nest now. But either take it once every fortnight or once a month cos' too 'bu' BB will end up very big then hard to be delivered. Some pple also said that some fine feathers can still be found in birds' nest, so when ingested, sometimes BB can get asthma. Thus, don't consumer too much. And oh, remember not to touch hashima cos' that thing is super 'liang'.