Before I start I just want to say I’m not claiming to have bpd, I just want advice. 
So I’ve had depression for a few years and mostly I never get excited about anything for longer then a few minutes and always at a low intensity. You know, depression shit. But recently I’ve been having these weird “episodes” of... something? And after doing some research I suspect it might be some sort of mild mania. It’s usually triggered by listening to certain songs and suddenly I feel like a god. Energy levels through the roof. Self esteem off the charts. Anxiety and forethought goes out the window and suddenly I’m impulsive as all hell, which is super out of character for me. Suddenly instead of wanting to deal with anything, my thought process turns to “who cares!! That’s future mes problem, I just wanna have fun!!” And I’m laughing and singing and things that I usually don’t have the energy to care about (hygiene, cleaning my room, etc) suddenly become important. It usually lasts about a day or 2 and I never get any sleep during that time. 
But during the whole experience I can tell something is *wrong*. It feels fucking great yes, but it’s not normal. Especially after the fact, I can tell I wasn’t right. Every time I usually make some remark about “For some reason I have a lot of energy today and I don’t know why but it’s cool and I don’t care so I’ll take it :D” But it also usually leads to bad shit as well. I act like a rude bitch to people for fun, I text people I haven’t talked to in forever and don’t know how to talk to, and anything I’ve been clean from usually gets a relapse, among other things.
I really don’t know what this is and it’s bothering me, it feels great but it feels wrong and I’ve started avoiding the songs that trigger it. I know this is a long stupid block of text but I really want some advice, is this some sort of slight mania or am I being dramatic? /gen

(Btw, I’m not asking for anyone to tell me if I have bpd or not. I want to know if these seem like the signs of mania or just being over dramatic so I can talk to my therapist about it)