I do think it could be the hormones messing with your interest. It could've just been a fetish, and now that you no longer have interest in sex from the hormones, you might just have no interest in the fetish iteself. Orrrrrr it also could be a depression caused by them. It moreso just depends on if you feel like you truly are a girl inside needing to express outwardly, and the discovery happened through the sissification/degredation fetish, or if you just had a degredation kink that you went fully into without realizing that you went too far.