Hi Manal,
It's all a matter of faith.
Surely it is one of the great things about Islamic teachings. We cannot fully understand the reason behind something told hundreds of years back until science proves it today. It is just like one of the many facts (orbits, water cycle, embryological stages of human etc) told in the Holy Quran 1400 years back that science eventually proved later.
As you might already know, that Hazrat Halima breast fed Prophet Muhammad (P.B.U.H) like this way even his (P.B.U.H) real mother was Hazrat Amina.
So, I guess this is one of the blessings from anything that relates to the Holy Prophet (P.B.U.H) and his teachings.
All we can do is hope for the best.
Take care, Peace!