Ugh stomach issues

Sam • my name is Samantha sam for short im 24.This is my first pregnancy. It`s been so easy for me. Having a little girl so excited. Cant get help starting to hate this app.
Have any of you had diarrhea in your third trimester?? I started getting it last night also along with nausea is that normal. My cousin said it's a sign that pregnancy is near. But I'm not to sure. Any answers??