If you think we need some new part of the site, that’s a discussion topic for the Site Feedback area and you can take it up with a moderator.
We’ve asked before about having an over-18 section of the site, primarily for the purpose of keeping under-18 posters from commenting on certain threads involving people’s marriages. The moderators nixed the idea.
In any event, even if we had an over-18 part of the site, your post would likely still be a little too explicit. You are not having a specific sexual problem in your marriage that you need to discuss from a Catholic perspective, such as lack of desire or an NFP issue. You just decided to post a lot of overly personal details that not everybody, including other adults, wants to read. I don’t know what you talk about in your “men’s group”, but this is the public Internet; there are not only people under 18 on this forum reading, but also women, people from a lot of different cultures, etc. and furthermore this is a self-moderating forum where if other people feel your post violates TOS by being inappropriate, they can flag it, as we did.