R&B singer Toni Braxton has revealed in her new memoir that she believes her son's autism could be God's punishment for her past abortion.

In her new book entitled, "Unbreak My Heart," Braxton revealed her feelings when finding out about her son's autism.

"Is God punishing me for that abortion?" she wrote.

She acknowledges that the notion is odd but states that she could not help but think that it was, "God's payback" to give her son autism.

She also deals with her belief that God may have also punished her through her parents' divorce as well as her own lupus diagnosis.

Braxton was raised in a very strict religious home, and she has said that her upbringing had a large impact on her life, but she will no longer suppress what she feels. She said the motto of her household while growing up was, "Shut your mouth and suppress your feelings and opinions."

In the memoir she also goes on to confess that perhaps it was a vaccine that caused her son autism.

"Maybe it's just a coincidence that after my son's first MMR vaccine, I began to notice changes in him," she wrote, noting that after the vaccine he was no longer as responsive to affection or as high-spirited as he was before the vaccine.

Braxton's new book is in stores now.

The singer likewise spoke to ET's Nancy O'Dell about "God's" punishment to her. "I never thought I would have to do that," the 46-year-old told ET, recalling her decision to abort her unborn baby.

"I felt selfish because I was thinking, I'm going through bankruptcy -- there's things going on with my life and I can't give this kid any future. I was feeling hopeless for no reason, when I look at it now for no reason, what was I thinking?"

She added: "I am not really embarrassed about it, I am more ashamed of myself for doing that because I could've figured something out financially -- that was just an excuse I was making for myself."

When asked whether she still deals with the guilt today, Braxton responded, "I often tell myself I have three kids. I have two boys, but I often have to tell myself I have two kids. But in my head I feel like I have three kids."

Watch Braxton's ET interview below: