Getting discouraged

Me and my husband have been trying for a baby for 4 years now. I keep getting my hopes up every time Im a day or two late... I tell my husband and he gets excited to. But just like always I take a test it's always negative, and then the next day I'll get my period. This time I'm 5 days late. It's right before Christmas so I got it stuck in my mind (wouldn't that be a cool way to tell grandparents) but I am to scared to test. And I am to scared to tell my husband cause I don't want to see the disappointment on his face... Again.

I just need some reassurance.