Disgusted with myself...

I had a dream last night that I cheated on my now partner with my ex husband. In the dream I felt so guilty and terrible... after I woke up and realized it wasn’t real, I was like, thank god! But I can’t shake the feeling of disgust and guilt! Ugh! My ex husband was so horrible to me and we are no longer in contact and I am now pregnant and due in Sept with my new man...

Why did I have this awful dream???