i just want to be in bed all the time

i'm going through a huge life change. i'm a social worker and i just switched jobs from a job that i loved where people knew me and turned to me for advice to a job where i feel alone and sit in an office all day without a window.

when i am there it's like i black out. I walk out the door and can hardly remember what i've been doing all day. when i get off, i don't want to do anything but crawl in bed and watch tv in the dark. I've been very depressed in the past but I've been on medication for the last couple of years and it has helped alot. Even though i am not thinking about unaliving myself like i have in the past, i still feel more depressed than i have in a long time. how do i know if this is normal sadness because so much is changing or if this is the start of another dark period in my life?

when i'm around people i love i feel like everyone is looking at me. like they can all tell that im acting weird but i just can't explain how i feel so it makes me not want to be around anyone. also thanksgiving is next week and my wife and i are supposed to host our families, but thinking about dealing with all of the family dynamics makes me want to lay under the bed and pretend the world doesn't exist. i wish i could be invisible.