Feeling bipolar for some reason.

I don't know a few minutes to an hour ago I was super anxious and mad and stuff and now I'm feeling silly and in a somewhat good mood. I'm stimming occasionally and cracking jokes with my mom. and thing is I've only become like this and I've barely eaten but I forced myself to eat apple slices. idk what is going on with my brain but right now I'm just comparing myself to a character from a fandom I'm in (Caine from TADC). yeesh.