Does a triple divorce—that I uttered or doubt having uttered—take effect, knowing that it was initially a soliloquy, then turned into a doubt, then it became highly probable that it was uttered, and knowing that the couple had sexual relations thereafter?

Divorce does not occur through inner thoughts, nor through mere doubt about its occurrence, because the basic principle is the continuation of the marital bond until there is certainty of its severance. A marriage that is established with certainty is not dissolved by doubt.