39 weeks... all of a sudden emotional

So... I'm 39 weeks 3 days with my 4th... and been so anxiously awaiting his arrival. My patience is growing thin. Anyway, all of a sudden tonight I got overly emotional, like on the verge of tears for no reason. Never had this with the other kids. Instead of the normal "burst of energy" you hear about before labor it was like a burst of tears. I had to go in the other room so my kids wouldn't wonder what the heck was going on. And then it disappeared as quickly as it came. Has anyone had this??? Is it a sign of labor coming bc of the hormone fluctuations? All my other kids were born before 38 weeks so I've never made it this long. Just wondering if any of you girls had this or am I just an emotional mess 😬