I'd be thinking 'here is an employee, working in a position of trust with children, who apparently has very limited self awareness, very poor judgement, very poor boundaries and sense of appropriacy, issues around sex and exhibitionism that appear to be coming to work with them, and very little respect for themselves or others. And this is a major problem, because someone with these personal problems should not be in such a role.'
This.
For crying out loud. Are we really at the point where unless a sick child actually sees their HCP filming themself shagging a colleague, then it's fine? How about we just give them earplugs and an eye mask?
If you're in work, and you can't keep it in your pants long enough to get home, then there's something wrong with you.
Either the illicit surroundings are turning you on, or you have zero boundaries. You almost certainly need to watch less porn. If the concept of making porn in a children's hospital is driving any of your decisions, leave and get therapy.
It's not normal, it is a safeguarding risk, and they should be fired.