I have been TTC (secondary infertility, DH has very low sperm count) for 2.5, nearly 3 years. And this month my period was a week late. That never happens!
I couldn’t take a pregnancy test as I’m in a holiday cottage with friends, and couldn’t sneak off to the pharmacy.
Not taking a test was both good and bad for me. Good = not wasting money. Bad = I am never more than a day or two late, so I let myself get carried away 
But I have just started spotting brown and very light pink, so that means it’s over. I’m 41 now. It really feels over. It really feels impossible.
I am due to see a fertility clinic in September, but I don’t think I can live with this constant disappointment every month. I find it hard to not think about getting pregnant all the time, but perhaps I need to just admit that I’m too old and let it all go.