You don't need to internalize everything. Someone being cranky at you doesn't mean you did anything wrong. It's not all about you. I know your emotions are all haywire because you're pmsing, and he's not acting normal, but it's not about you, and if it is, he will come out and tell you. He's a mature individual who wouldn't just give you the silent treatment and expect you to know what you did. He's really stressed at work. This isn't even about you. Tell that horrible scared feeling in the pit of your stomach to fuck off. Better yet, take some anti-anxiety medication. Yeah, that's a good idea. Good job for thinking of that, self.
It's going to be fine. You're going to be fine. You'll both laugh it off later. Just refocus on your work and wait for the Proponal to kick in.