Khlo Kardashian's family doesn't realise "how hard it is" for the star to talk about her ovulation struggles.

The 28-year-old star has previously spoken about her battle to conceive with husband Lamar Odom and became emotional when she finally saw a doctor about her infertility problems in a recent episode of Keeping Up with the Kardashians.

In Sunday's programme, Khlo's ovulation problems came up in conversation again in a meeting between her mother, sisters and brother.

The star complained that her family don't understand her turmoil.

"What I'm going through, it's not something I have fun talking about over and over again," she said in the episode. "I don't think my family realises how hard it is for me to talk about it."

In last week's show Khlo opened up to her husband after her visit to the doctor.

"I got checked out, and I am not ovulating," she said. "I just felt like something was not right."

In the newest episode of the hit reality TV show, Kourtney was seen giving birth to daughter Penelope.

The Kardashian clan were all present during the labour, with Kourtney admitting her anxiety ahead of the birth.

"I'm feeling very emotional and nervous," she said. "Even though I've done this before, I still just feel very anxious about what the next few hours will bring."

Kourtney and Scott Disick already have son Mason together.