It happened to me, too- I was totally fine for mmm... 2-ish years and then it came back and hit me hard and it still hasn't gone away. I don't think you're falling again, it doesn't sound like it, but you should talk to somebody that isn't so close to you about it. A therapist or a doctor, maybe, or even pm me and we can talk about it. People close to you tend to not understand as well because they've seen your good days and they don't get it when you're having a bad day; they just won't see the sadness.
It'll get better!