I don't know how normal this is. Last week, I felt like the most miserable person alive topped off with what felt like the worst day of my life yesterday (received bad news about a family member). Today, I feel great and love everything about life. I blasted music and was motivated to clean up the house and cook myself a nice meal, I just feel happy.

It's such a sudden switch in emotions, because the past few weeks, I mostly had episodes of feeling depressed and anxious. It's not the first time this happens either. It goes from days or weeks of feeling hopeless, afraid and down to feeling great again.
I read about bipolar disorder, which sounds a bit like it, but I don't think I really experience "manic" episodes that could harm me by making bad decisions and I don't feel irritable.
Maybe it's just normal to feel like that?