Dog sense early pregnancy?

Kali • Married 💎, TTC #1

My dog is 8 months old. When we let her sleep in the bed with us, she normally lays at our feet. The past couple nights, she’s been parallel to my body. With her head on my pillow. My husband tried to cuddle with her like force her to cuddle and she didn’t want to. She came right back to me. She’s basically been up my butt super clingy , like won’t leave me alone. AF not due for another 5 days.