Am I depressed?

I have had anxiety from a very early age, I don't ever remember not having it. As a child I had depression too, no one should be suicidal at 6 years old. Crazy. Anyway, the past two years my anxiety has been getting better, I'm now able to get up and go to work or go to the shop alone etc. I'm never had medication or therapy. Didn't think I deserved it. Now I'm always exhausted and have phases that last Couple weeks of just being so upset. I feel worthless like everyone hates me and I can't stop crying. I just want to lock myself away.   But then suddenly I'm fine and happy. I can't tell whether I'm making progress because I keep falling back. I can't tell whether it's my anxiety being shitty, or whether it's causing mild depression. It doesn't feel like the last time but it was so long ago. Anyone feel similar? Any tips?