Birth control before wedding?

So we're getting married in September 2021 (Yay!) My fiance and I have been using the pill for a little over a year with no pregnancy scares (condoms before then). But I'm a little worried that an oops in the next several months would have me showing at the wedding (or worse, that I would need to make unscheduled dress alterations. Plus, some of my fiance's family is pretty conservative (we're both Catholic but his relatives are hard core) and we'd like to leave them their illusions about us and spare us any grief. :-) On the other hand, we both hate condoms, and we're wondering how much we really need them for the next few months if I'm careful about taking my pills (which I am). Any feedback, thoughts, or personal experience would be appreciated!