According to my personal understanding, Sabbath means rest, and it is every seven days, not necessarily a specific day of the week. The Jews had their traditional Sabbath since the time of Moses, but the early Christians began to meet on the day of the week when Jesus was resurrected. In fact, many years ago I read that in the beginning the Jewish Sabbath and the Christian Sabbath were recognized.
Yes, our feelings and what my preacher told me are all nice but they don't overrule Biblical "It is written". The Sabbath is recognized as the seventh day. Jesus kept it. The Disciples kept it. Matt. 24:20 affirms the Sabbath was still the day to observe. The Sabbath hasn't changed since Creation.