Am I just worried or do I have depression?

Hey guys, I'm 19 almost 20, and I used to live in a different state where I grew up, after I graduated my parents moved away to a far away state, after that summer when i moved there to visit them before college, about a week after i was there I started to feel very off, couldn't sleep, emotional, crying for no reason, and anxious and hopeless. Then I went off to college back in the state I used to live, and I struggled to the point in which I finally left college and stayed in my hometown< it was only then that I slowly felt better and then last summer iI was still there and felt amazing, then In June i moved back with my parents, and the same thing happened, after about a week, I just woke up and felt off and depressed. Only this time it is not near as severe, for a couple weeks it was bad, but now after being here for 5-6 months, I feel a lot better, but the thought of depression haunts me, I think about it a lot, b/c I still don't feel quite like myself. My parents and people at work say I seem fine, and i'm too happy to be depressed. But i think about it a lot, but I hate thing about it it's like my brain won't let the idea of depression go. I'm not sad hardly at all, and i have frequent happy moments the majority of the time, And I always feel normal and 100% okay when i'm engaged in conversation, work, or activities, but as soon as i'm not doing anything, I start to get headaches, throbbing in my ears, and my mood drops, and the thoughts of depression start up. I also dream a lot. I feel like I might be mildy depressed, or maybe i'm just worrying myself to death? I feel like i'm battling myself. If I had to rate my happiness/feeling like myself on a 1-10 scale 1 being sad 10 being normal and happy, i'd say i'm a 6 or 7. Idk if any of this helps but it's how I feel, I'm just not sure what's happened, I don't think anything is bothering me, however, I don't really have friends here, bc it's all new to me and I don't plan on staying here forever. Any thoughts? I do find it suspicious that I have experienced this off feeling and worrysome thoughts both times that I have moved here.