Seasonal depression

So randomly this week I’ve been hit full force with (what I assume is) season depression. I’m 18 and have never had seasonal depression so bad before. My boyfriend is starting to notice that I’ve been distant for a few days and I told him what’s wrong earlier today. I just don’t feel like myself and I don’t know what to do. I’ve felt very disconnected from myself this week and I’ve been going through the motions more than normal.

Does anybody have advice on what to help with seasonal depression? Please drop some advise in the comments.