Post partum

For non FTM, does post partum depression have to do with how your feeling right before birth? Or is it mainly a hormonal phenomenon? I’m 37 weeks and suddenly feeling so bored, randomly sad, thinking my husband is not interested in me, our home or cheating, feeling like I have so much to do but nothing really to do, I’m slacking on regular stuff that I normally would do and this list goes on. Does this sound like an onset of depression or???