Get sad every time I come home from college. Don’t know why?

Every time I come home from college, even if it just for a day or two I get really sad. I’m not sure if it just because I love school so much and don’t like my home town. If it just because I’m spending more time alone. Or is it because I went through a lot of traumatic things in my childhood home. Did/does anyone else go through this when coming home from school? I’m not sure what to do about it.