Is anyone else dealing with sudden depression?

At about week 35 I got 10x more tired and severely more depressed (more than my usual chronic stuff). Idk if it's pregnancy related, probably the stress around it. But I've only left the house for important appointments 3x in the last two weeks. I only get out of bed to take care of basic hygiene, and even then it's not as often as I ought. Everything overwhelms me, plus dealing w insomnia. So it's a vicious cycle. Haven't done any nesting, that I'm mentally aching to do but my depression says "noooo". Can't wait to hold my baby. Due Feb 24th. Idk.