FAMILY AFFAIR I walked in on my husband having sex with my MUM when I was pregnant with our 5th child – it had been going on for years.

Mc Peculiar

The shocking affair was made even worse when she figured out the timeline.

AFTER returning home early from a girl's weekend, one woman was shocked at what she walked in on.

The pregnant mum found her husband in a compromising situation with her own mother, and things got even worse.

In her post, the unnamed Reddit user explained her family tree for context.

The 40-year-old revealed she has been with her husband since they were 15, first getting pregnant at 17 and having five children in total.

She added she has six siblings, who range from 18 to 42 in age.

"I thought I had a good marriage, we were intimate more than twice a week, we went on date nights, we bought each other gifts, we didn't fight," she wrote.

However, she described how her "entire world was shattered" when she returned home from a trip early.

"I walked into my bedroom to find my mum having sex with my husband," the poster explained.

She recalled how her mum even screamed at her to get out of "their" bedroom.

After her mother rushed out, the woman confronted her cheating husband.