Conscience is both real and faked in form. In real forms it is simply the repugnance a True Being as for this realm and a strong urge to return to is proper environment. It isn't just a rejection of some aspect of this realm such as what one does with one's body, but a rejection of the entire body and its world altogether. In faked form it is truncation of such a Spiritual Moral Expression so that it can only express as what a biologically programmed and culturally conditioned physical body can understand as moral, which is fear of shame, or fear of self-loathing due to a sense of internalizing shame beyond the need for social reinforcement, etc. It has nothing to do with a fundamental rejection of anything except for something which is not conditioned and programmed the same way that it is, so that it can "hate" other kinds of its own nature of pseudo-morality, and also hate TRUE morality, and not even know the difference between them.
The nature of a being, whether it is indigenous to the fake reality or not, determine whether or not it has an innate moral compass which transcends this false realm of pseudo-ethical beings. If it does then it gets a "gut feeling" to remember and follow that deeper and truer code, and this fights to reprogram the ego-conscience (Freudian Super-Ego) until it annihilates the physical ego rather than rehabilitates it with reinforcing feelings which teach it how to go along to get along with society and nature here regardless of any moral principles. Freud, incidentally, was all about disabling THIS kind of conscience, not the false conscience which readily rehabilitates the ego rather than crushing it. The ego can only be conditionally moral, and so a conditionally moral conscience is what grows from it or in harmonious relation to it. An unconditionally moral conscience cannot spring from it nor tolerate it. Freud was the inventor of a psychological process which facilitated the undercutting of the Spiritual Conscience in favor of the ego, so that it could integrate with its world without any hangups...
But this means the death of a True Being, and all its gut instincts will go against this immoral form of ego-worship and falsified moral process. Gut feelings are a realm of experience which is visceral and deal with intuition on a level that simply ignores conscious reasoning and asserts data which it may or may not entertain intentionally. It therefore MUST reveal information concerning disharmony with the ego even if it comes from a conscience which comes from a Spiritual Reality which will inevitably destroy the ego. The only way it will not is if gradually the True Person disregards the gut feelings, intuitions, and other feelings which indicate to it to rebel against ego, false conscience, and the world/society which reinforce those systems of delusional self. Originally meditation and true philosophy were forms of disintegrating the false self so as to reach the true self, but only beings WITH a true self can undergo this process, or have anything to gain by doing so. Everyone else who does it is just like pig wearing lipstick. They aren't even capable of hypocrisy, but only mild confusion and helplessness which might result when their ego/super-ego system go out of line with others or with conditions. They are robots which can superficially look the same no matter what the consciousness within, so they are built with plausible deniability, but are on the whole supressive and inimical to true moral feelings and will gradually force them into compromises which annihilate them and their lifesource, the Moral Spirit.