Kim Kardashian has made no secret of her frequent attempts to get pregnant with her second child . Speaking on Keeping Up With The Kardashians , the 34-year-old reality star said she was 'desperate ' to conceive a sibling for baby North - to the point where she and Kanye were having intercourse multiple times per day . And now , one fertility expert has offered some insight into Kim 's struggle , suggesting that the global star 's hectic lifestyle may be to blame . Kim Kardashian , who is already mother to one-year-old North West , has said she is 'desperate ' to conceive a sibling for her daughter ... but one fertility expert says her hectic lifestyle may be to blame . Speaking to new ! magazine , Mr Paul Serhal , Medical Director at CRGH , a leading fertility clinic in London , said : 'Kim should reduce her hectic lifestyle in order to increase her chances . ' Kim - who has been flying all over the world over fashion month , starring in shoots and tending to the needs of her one-year-old daughter - needs to take a break , says Mr Serhal . 'Flying is a common cause of infertility in high-profile , professional women because it can impact on the regularity of the ovulation cycle . Speaking on Keeping Up With The Kardashians , the 34-year-old reality star said she wants to conceive a sibling for baby North - to the point where she and Kanye were having intercourse multiple times per day . 'Ovulation time is critical because women aren ’ t fertile throughout the whole month . This is another reason IVF could be a good option for Kim . You collect ten or 11 eggs and effectively pack one year of ovulation into one IVF cycle of treatment . ' Mr Serhal believes that thanks to her age , Kim , who has already proved she can conceive naturally , would have a very good chance of getting pregnant with IVF . He explains that women in their 30s - like Kim - have a 60 per cent chance of conceiving through IVF . Kim , who has been flying all over the world over fashion month , needs to take a break , says Mr Serhal . On the E ! show , Kim was seen lying supine to allow Kanye 's sperm to 'marinade ' inside her . 'The doctors said I have to lie down for 1- minutes after sex ... and I had sex just before you got here , ' Kim said as her sisters groaned in disgust . 'Lying flat after sex wont make any difference , ' said Mr Serhal . Instead , he suggests that she should maintain a healthy diet , limit alcohol consumption and avoid prolonged exposure to heat to help her chances of falling pregnant with a little brother or sister for baby North . Mr Serhal believes that thanks to her age , Kim , who has already proved she can conceive naturally with husband Kanye , pictured with North over the weekend , would have a very good chance of getting pregnant with IVF . Read the full interview with Mr Serhal in this week 's new ! magazine , on sale now .
Kim , 34 , has said she 's 'desperate ' to conceive . The couple have been together for three years and are expecting their first child in the summer of 2016 - Flying is a common cause of infertility in high-profile , professional women .