another bfn😞

So we have been ttc for over a year now and I was so hoping to get my bfp for Christmas. According to my dh I need to "just stop stressing about it" so thats what I've been trying to do. I was so sure it worked. AF is due tomorrow and I have been feeling super weird last few days. I started spotting this morning and vomiting after lunch with none of my usual pms symptoms so I thought for sure this was it. Just another bfn for me though. I'm feeling super down and already know what dh is going to say so I was wondering how other deal with this disappointment month after month?