Forget it and move forward. A breach of celibacy merely stirs up sankharas. If celibacy is reestablished, those sankharas will settle down on their own accord.
If celibacy is practiced for a future imagined "rebirth/reincarnation" rather than for here-&-now benefits, such as real jhana, this will cause worry. But if celibacy is maintained to develop the Noble Path (rather than for reincarnation in Brahma's heaven) then an infrequent breach won't cause too much worry, apart from it being a backward step that must be recovered via samadhi/samatha re-development.
Its like digging a hole in the ground, then refilling the hole, then having to dig it out again. Its extra and wasted energy & effort.
I imagine a bhikkhu confesses masturbation, for example, merely to keep the rule clear in their mind and to develop hiri-ottappa in front of the Sangha of spiritual companions.
Not here. Do I recall you one claimed publicly to be a Non-Returner?