First of all, I am a Catholic. Recently they made changes in the Mass. For example, instead of saying to the priest,”and also with you”,we now say “and with your spirit”...plus some other changes as well. I asked the priest why they are making these changes to the Mass, and he said they were just trying to get back to the original meaning of the original Mass which was changed in the Middle Ages. If they can do this with the Mass, then surely they can do this with other policies which were instituted uring the Middle Ages, including the policy of celibacy. BTW I have two vocations myself: I am a member of Knights of Columbus and I am a Eucharistic Minister. I have studied the Bible extensively as well as Church history.
(1) I already said this is a discipline matter and yes, disciplines CAN change. Someday we may see married priests. I personally like the discipline of the Church and would hate to see that, but it would be a change that wouldn’t alarm me (ie. not doctrinal).
(2) Either you misunderstood your priest or your priest is clueless but the change you are speaking of in the mass was a change back to the correct English translation of the original Latin. When Vatican II radically changed the Mass, the vernacular didn’t always translate well. It has NOTHING to do with the Middle Ages.