No mood swings during pregnancy?

LR

I am 17 weeks and so far I have had no mood swings. In fact, I’ve never been so even keel. That was part of the reason I knew I was pregnant - I kept waiting for the PMS to come and it never did. I am almost kind of worried how my body will backlash once I deliver! Has anyone ever gone through a pregnancy and had no mood swings? If so, did you get postpartum depression or anything like that?