Signs labor is near?

Tmi but anyone that has gone into spontaneous labor did you deal with diarrhea before hand? If so how long? I’ve been on iron so the bowels haven’t been moving like that but friday night and last night my stomach has decided it’s moving EVERYTHING! I’m not sick with a stomach bug or anything. Friday night I thought maybe it was from dinner since I had chili cheese fries but then I was perfectly fine yesterday until after dinner again I’ve also been nauseous. I’m 38 weeks today and really hoping this is a sign he’s gonna be making his way. This is my 3rd but my first 2 I was induced with so I have zero idea what to expect.