How do you not get upset?

So my hubby and I have been married for nine years. We tried to get pregnant soon after marriage with no success and then had to put that on hold due to some health issues on my side. So back to trying again and back to disappointment every month. But nothing like today. So my period was due three days ago, and I’m always on time, so I started to get excited. Didn’t want to take a test till next week because I thought I would jinx it. (Crazy, I know) My best friend kept telling me to just do take the test already. So I finally get the nerve up and guess who decides to show up right at that moment?!?!?! You guessed it! Aunt Flow herself!! I’m just beside myself and my heart is breaking! Why won’t this happen for us? How do you all deal with the disappointment?