I don't know how Omega 3 would affect LAD levels, if at all. I'm wondering, though, why the isolation of Omega 3 and not the other two Omegas.
You had mentioned diet and supplements. What are you doing now for your diet and supplementation?
Although you had blood work done there might be other factors contributing. You may want to rule out all possibilities for a successful pregnancy. There are a couple of posts on this forum on pregnancy that you may find of interests to you.
As far as your tests, Apxr might be able to comment when he has the time. Thank you for your understanding and patience.