Feeling like an idiot

I stupidly got my hopes up thinking I might be pregnant. My breasts have been throbbing (like when I was bf with my son) I've been super tired and my sense of smell has been funny. All of this happened when I was pregnant last time. So I did a test - bfn. I feel like an idiot for even thinking I was pregnant. And of course EVERYONE I know is announcing that they are pregnant. Just wanna crawl into a hole and cry :(