New blog question

I finally did it! I started a new blog. Now, before I officially make it "live" and start handing out the link, I have some questions for you. The thing is, I still want to keep this blog on the down low. This has been my venting area, and while I have told some friends about it, I have not widely advertised it. It is, by no means, that I am ashamed, but there are some topics of discussion here that could be uncomfortable for others in my life to read about. That being said, if any of my friends came across it, and wanted to read, I would not have a problem with them doing so. However, if possible, I would like to keep this blog separate from my new blog. The only way that I can see how to do that in blogger, is to not make this blog visible from my profile. The fact is, though, this blog still exists in blogger land, and is now linked to my name. So I guess it theoretically is possible for readers from my new blog to come across it, if they googled my name, or if they happened to click on any of you (my followers) and found my name linked with your blog (either in a comment, or in a list of blogs on your page). So, I am not sure what to do from here. Do I make this blog completely private (not an option I really want, as I still would love this to be accessible to other bloggers struggling with infertility who have not come across it yet)? Do I limit the readers to only other blog writers (thereby limiting the random blog searchers out there who only read and do not write themselves)? Do I go through my hundreds of posts and privatize the super sensitive ones (that seems like a lot of work, though I am on bed rest and it's possible)? Could I create a new blog profile and somehow switch this blog to that profile for more of a secret identity? Or do you have any other suggestions??? I'd love to hear how some of you have handled this type of thing, and if you have anything to say about what options I might be missing.