Is it normal to have crazy mood swings and sadness one week before delivery?

I believe it’s a very valid and emotional response to a major change in your life. I found from about 3 weeks away from my scheduled c-section my mood became abit unpredictable and would’ve cried at the smallest things. I think it was a sense of grieving the natural birth I originally envisioned and thought I would have had, a mixture of nerves and anxiety about major surgery and also “grieving” the last few weeks of it being just my husband and I

I get the feeling of feeling very low about everything too. I felt like that sporadically throughout my pregnancy but it heightened within the last few weeks, hence why I thought i was “grieving”. Even now being 4 months postpartum, there’s still days where I’ll feel down and just need a cry. It’s frustrating when my husband asks what’s wrong because I genuinely don’t know what it is that’s making me feel that way.. or I’m feeling ok and he’ll repeatedly ask what’s wrong that it puts me into a bad mood. I know he’s just looking out for me but at the minute I’m just putting it down to hormonal changes, it was just yesterday that I took something that would normally be minuscule to heart and cried for a good hour.
It’s just been recently too that I’ve heard and learnt abit about prenatal depression.
Be kind to yourself, do something that normally brings you joy and if you find things don’t improve after you’ve had your baby, please reach out to someone. You’re not alone