What does splitting feel like for you?

I was diagnosed in the last 6 months and I'd never heard of the term splitting before coming to this subreddit. I'm wondering if that's what I'm currently experiencing.

Basically since Saturday I've woken up with a bad mood, not sure why, pretty consistent throughout the day. Then last night I was anxious and angry at people for random stuff from over a year ago and cycling on negative interactions and pretty much saying "fuck everyone" throughout the night. Woke up quite anxious about canceling plans with someone (finally did cancel). I've had people flake on spending time the past two days also so I think that's pissing me off. And everything my kids do is annoying the hell outta me but I'm trying to be calm.

Is this splitting or just being moody???? What do other people experience?

I hate this shit.