Does anyone elses mood just change at nothing?

Today started off fairly ok I guess. And then my bf said something that just threw me and my head went off in a woe is me direction.i got stuck there for a bit and then somehow made my way back. And then he did something else to throw me. And now I'm stuck again. Wanting to just hurt myself to make it easier to deal with this crap.

I'm just gonna carry on drinking and see what happens.