Has this happened to anyone?

I don't know whats going on with my emotions right now. I have nothing to be sad about- or at least anything to be long term upset about. I feel terrible, like no ones there for me when I know damn well people are. I feel like my boyfriend doesn't need me, and he deserves better- he treats me like a queen. Its like my mind is telling me all these lies I know aren't true and I keep having these break downs and I don't understand. Is it just hormones fucking with me? Just me being a teenager? I can't think of anything really. I'm not a sad person, this isn't me.