Baby girl is messing with me

I am so frustrated and sad right now. I woke up at 3:30 am with a bad ache in my lower back and period like cramps. I had some nausea. Then this morning I had diarrhea 3 Times (sorry if TMI). I thought for sure this was the beginning of early labor. But then, I started moving around this morning and it all stopped. Just STOPPED. What the hell?! 😡😡😡

I’m 37 weeks 2 days with my second baby. I just want to get things going.