Angry dog mommy

Do you think my 4.5 yr dog knows I’m pregnant? I’m 14 weeks 3 days and two weeks ago this bitch starts shitting in my house. 😡 5 different days, twice on my carpet. I’ve ruled out parasites, heart worms, etc from her stool. Took her for a 30 min walk last night which she did number 1 and 2 (after she went on my carpet a few hours before) and I still woke up to poop on my kitchen floor this morning. I let her be free in the kitchen thinking it would be safe. Nope! 🤢🤬😡