Mood swings?

Michaela • Breast feeding mommy to a beautiful little girl ! Kinslee Marie ❤️
So today I have just felt so down. Just want to sleep, everything bothers me, and everything that the 2 year old and 1 year old I nanny do is just driving me over the edge ! No paitence and just ugh. I'm 6 weeks. I do suffer from depression and anxiety as well and actually have to take a mood stabilizer (Zoloft) to control it. Could this just be my hormones?