Alexithymia and Depression

I will start this off with the fact that I have had depression for longer than I have lived without it. So, I started to have depressive episodes at the young age of 13, and now that I'm in my young 30's I have lived with it for 20+ years. There have been days where it's been good and I hardly hated myself and the world around me; there have been bad days where I nearly took my own life. So, in that respect, I know a decent amount of depression and the curse it lays onto the body and mind.
Alexithymia, on the other hand, is more of a recent discovery about myself, but looking at the symptoms of it makes me nod and think to myself, "Yeah, I might have that." It's not an official diagnosis (which I should get it checked at some point), but there are quizzes online. This is how I figured out that I might be autistic a whole decade before actually being diagnosed with it. I knew it wasn't official,but it was a stepping stone in the right direction.
So, how do these both clash together in my mind, and my answer would be, "No idea." I have lived with depression long enough that I know I can't just click my fingers and wish it away. And Alexithymia is still pretty fresh; there could be some similarities of them, but I am unsure of what they might be. So, if you think you might have either, don't be scared to seek professional help; I did.