Mood swing

This month marks 2 years since my last depo shot. The last three days I have been extremely moody and bitchy. The same way I would get when I was due for another shot and shortly after getting it. Every little thing is pissing me off. (Excuse my language) I have been ttc since coming off the shot and haven't had any luck. I guess I'm just wondering if my moodiness has anything to do with maybe the rest of the hormones leaving my body?