When I, at ~13, tried coming out as a lesbian to my great-aunts, a sapphic married couple, they told me to "keep my options open" and "not to limit myself because I might change my mind and need to come out again".
And I followed their advice for 5 years. Only now did I go to my first csd as openly lesbian; and I haven't ever felt more happy, comfortable and myself!
So that's to say: coming out again because sexuality fluctuated is not going to do any harm! It might change, it might not, sometimes a certain label resonates and brings comfort, other times a label might feel restrictive or there just isn't one that explains it or feels right, and all of that is totally fine! But if something does feel right, not accepting yourself for the sake of others definitely will do harm- to yourself. And you do not deserve to feel uncomfortable or unhappy with yourself just to make others happy!