I don't exactly know what you mean by that. Like that would make someone less of a father? Please. If you were to ejaculate into a woman in her third trimester, semen would undoubtedly make it to where the baby is. Of course the baby is inside of a placenta within the woman, but still your cock is right next to babies face while your doing it. Having random thoughts like this would not make anyone less of a parent. Shit some people get distracted during intercourse by the simple distraction like tv. Fucking a woman with another person inside of her may be akward for some people, that doesn't make them less fit to raise a baby.