I have "unexplained infertility" as well. All that means is that I quit using birth control over a year ago and am not pregnant, and the doctors don't know why. That doesn't mean there isn't a reason. You might have something wrong with you that makes it difficult to get pregnant via IUI. You also might just have bad luck. Most fertility doctors don't try very hard to find out what is wrong with you and just start doing Clomid and IUI, and if that doesn't work, they move on the IVF.
Â
The problem with Clomid is that, though it can help you ovulate, it has some side effects that are detrimental to fertility. I am at a loss to explain why Clomid is prescribed to women who are not suspected to have ovuatory problems. I asked my RE why she was recommending Clomid for me, since she believes I ovulate regularly, and I couldn't get a clear answer.
Â
Here is an article on unexplained infertility you might want to read. I also recommend checking out Sami David's book Making Babies. You can read a preview of it here.
Â
Personally, before I am going to start taking drugs that can have horrible side effects and probably won't work, I am going to do everything I can to get pregnant the natural way. I have started monitoring my cycles closely, changed my diet, and am seeing an acupuncturist.
Â
In your post you imply you haven't yet been to a fertility doctor, or am I reading that wrong? In my health care system, you see a reproductive endocrinologist before you get Clomid or IUI. Have you gotten the basic infertility tests done?