My husband and I have been having unprotected sex for four years and I have never been pregnant could there be anything wrong with me? Is there something I can do to help the process?. like stand on my head?.

Have you spoken to your doctor about it? That would be the first step, especially since you have not been preventing it for several years.
Doesn't hurt for anyone to have a preconception visit. Depending on the information you provide, they may or may not decide to do some initial testing at this point.

No I haven't gone in yet. I am making an app. For this weds. I think I'm going to make an appointment for my husband as well. Who knows it might be him?. the strange thing is that I've only been this late one other time, I'm have some signs that of pregnancy. But who knows until I go in.