So as it turns out, tracking down a copy of my baptism certificate was a lot easier than I had thought it would be. It arrived today! It was really neat to see it and all the notations on the back. However, I was baptized, had first communion, and was confirmed at three different churches. (I am also getting married at a fourth church. It is seriously like a bingo of parishes.) On the notations on the back of my baptism certificate, it has my confirmation (yay!) but it doesn't have my first communion at Church #2. It just says No Record (what it says for marriage, too).
I have received word that my certificate is on its way from Church #2 and I expect it later this week, but I am a little nervous. Is it a problem if the baptism certificate (from Church #1, in a different archdiocese) hasn't been updated? It just seems so strange to me that the confirmation would have been synced up but not First Communion. Churches 2 and 3 are in the same archdiocese, so I'd imagine their reporting back to my baptism church would have been the same, or is this wrong?
The priest at our church up here basically would prefer to wait to meet with us until after he returns from vacation in July, which is fine, but if I need to do some additional leg work I'd prefer to do it in these next coming weeks to expedite the process. 
Thanks in advance for any wisdom you might be able to share! And apologies if this has been asked recently!