Dannii Minogue struggled after having first baby

Dannii Minogue struggled to be a 'gorgeous, happy girlfriend' after the birth of her son last year as her work schedule was making her miserable.

Reports surfaces last year that the australian singer and her boyfriend Kris Smith were set to split after growing unhappy in their relationship.

The star dismissed the talk at the time, but now reveals that work committments 'took a toll' on her personal life.

Minogue, who stepped down from the judging panel of the X Factor this year, admits juggling motherhood, health problems and TV work put a huge strain on her romance with Smith.

She tells Fabulous magazine: "I have been sick. After Ethan was born I felt really tired and I didn't get better, I got worse. If I told anyone they'd say I was working too hard.

"I'd had a baby, I was travelling back and forth from Australia to the U.K. doing The X Factor. I was jet-lagged, on the go non-stop, all the things that make you tired. I just kept thinking I'd feel better but I was losing weight, permanently exhausted. I didn't feel like myself.

"All I will say is it took a toll on every aspect of my life. I couldn't be a gorgeous, happy girlfriend. I was anxious."

Minogue was subsequently diagnosed with an under-active thyroid, and she cut down on her work load for her health, a decision she credits with revitalising her relationship.

She adds: "I have to see what happened to me as a blessing. My body forced me to rebalance my life. I just couldn't do it. I needed to look after myself and my son, be at home with Kris. We needed to get through it together, which is what we have done."