Catholic Church ceremony

Do you know which church you completed those sacraments in? They may have parish records and can get you new certificates. Worth a shot anyway.

I wasn't aware the church will marry someone who is already married. That's cool

Depending on where you are, the church you were baptized at will have all of the information for your sacraments, regardless of where you received the others. In the US, when you receive any additional sacraments beyond baptism, the church where you receive them is required to contact the church where you were baptized. A notation is then made on your baptismal certificate noting the additional sacrament. That's the reason many parishes in the US require a new copy of your baptismal certificate sent from your baptismal parish in order to marry; that church is considered your "parish of record" and it is easy to verify that you received all of your sacraments and that you were never married in the Catholic Church before. I am not sure how this is done in other countries, but I believe the process should be similar.

That stinks that they never updated yours! The parish secretaries weren't doing their jobs :/

They don't. It's called a convalidation of the marriage.