Is this the start of labor?

Currently 35+4 and I had a stressful situation. My mother had called me and caused me a great amount of stress and since that call around 6:30pm (where I am now it’s 4:12 am) I have been having waves of cramps; some hurt some don’t. They aren’t regular yet but they haven’t stopped. And now I’m having pains like I have to poop but can’t. Ftm