Try wording the question in scientific terms so that it doe not become what many would consider to be spam or trolling. Also don't ask for tips and advice or you'll recieve nothing but trolls and spam.
here would be a good question
"Is fellatio safe if....?" or "How can i prevent pregnancy if I am allergic to latex?"
Both are not perverted at all, but theres always the stuck up answerers who would find it offensive.
Google the question. Theres probably somebody out there who has asked it atleast once before.