First of all, welcome to JM - the girls here are very supportive and helpful.
Second, thank you for sharing your story, I think that there are a lot of us that can relate. I haven't been trying for as long as you have, but I do understand the feelings that you're talking about. My husband never seems to be in town at the "right" times either, and that just adds to the frustration and heartache.

I'm very sorry for everything that you have been through.
Did you experience any extra stress last month around when you *should* have ovulated? Is there any reason for you to think that you could be late because you ovulated late? If I were 6 days late, I would test (and I never test unless I'm late), but I can DEFINITELY understand your hesitancy in doing so.
Good luck with whatever you decide to do, and let us know how it turns out. We will be here for you no matter which way it goes, and I'm keeping everything crossed for you!