It's crap that they don't offer you a scan flat. The good thing is, it's faint. It should get fainter each day until it's a BFN. But yes, the whole experience is crap.
It's no surprise you're feeling down - I think we all are. One of my coping strategies is to spend lots of time with OH's niece (2) and nephew (4.5) as they do cheer me up lots with their funny ways. The little boy is currently obsessed with poo, and I find it funny too, so we have some very funny conversations. When I saw them Thursday he had made cakes and I watched him decorate them. Then he said "I made cakes just for you". So sweet. Am making them a surprise cake today to take round tomorrow - it's a piñata cake so has smarties in the middle - can't wait to see their little faces when we cut it open tomorrow.
Not sure if you have any little people you can spend time with? I thought that it would make me feel worse, a reminder of what I don't have, but actually I find it helps as they are just so innocent, sweet and loving.
Can you make tonight special with you and your OH and just make it an "about us" night and celebrate your strong relationship? You could get a really nice bottle of wine and cook something special. May not work for you, I don't know, but sometimes distraction is a good method.
I've been through hell but am SO grateful am with OH. 3 years ago I was not only childless but also single, and thought I'd never meet anyone. I may not have the family (yet) but I do celebrate the fact I have OH.