I decided to pay attention to the interview the abused kids granted in relation to the Obinim saga. Clearly, Obinim may have lied about getting a revelation about the pregnancy. In fact, according to the pregnant girl, Obinims last born saw her taking the medicine to abort the pregnancy and even confronted her. Chances are that the child told Obinim about it and there was probably no prophecy involved.
I’d rather leave you to be a better judge. Watch the video for yourself: