Stone fall out on wedding day

My husband bought my wedding ring last week Saturday by sterns N1 city on my wedding day 2 November pass Saturday i was upset when its was time to take the picture of our rings at the gardens my photographer notice my one stone fall out how can u wear ur ring for the first time on ur special day then it embarrassed u like that my whole day was messed up i didnt even want to go to my reception and now that i see reviews i was shock coz i feel my husband made a usage mistake buying my wedding ring at u guys