Khloe Kardashian has found sex ''uncomfortable'' since falling pregnant.

The 33-year-old reality star is currently expecting her first child with her boyfriend Tristan Thompson, and has admitted that whilst some women find continuing to have sex whilst pregnant can be good for them, Khloe can't think of anything worse.

Writing on her app, she said: ''I have always heard that women are extra horny when they're pregnant, but for me it's been interesting.

''In the beginning, sex was the same. As I got into my third trimester and started to get bigger, it became harder to have sex and a little more uncomfortable and limiting.''

Luckily for the 'Keeping Up with the Kardashians' star, 26-year-old Tristan has been an ''amazing'' support, and ''would never make [her] feel different in any way.''

She added: ''I'm sure it's uncomfortable for a man to have sex with a pregnant woman too. Personally, I get uncomfortable and insecure. Also, you can't move the same, so you kind of feel useless, LOL. But you just have to improvise and do the best you can. (sic)''

It isn't the first time Khloe has sung the praises of the NBA star either, as she recently revealed she knew he was the one ''very quickly'', as she felt ''comfortable and safe'' with him straight away.

She said: ''My answer for this probably doesn't apply to everybody, but I knew Tristan was the one very quickly - I have never felt so comfortable or so safe with someone. Because of that, I took it very slowly and was cautious about how I went about 'us'. I made sure we had very in-depth conversations. I wanted to make sure that those conversations were backed up by actions.

''Tristan was so forthcoming with his life, as I was with mine. It was really reassuring to feel that someone had the same belief systems as I did. We spoke about religion, children and our families. I think all of those things are important to truly know the ins and outs of someone. It's really easy to fall in love with someone during a honeymoon phase when you haven't yet discussed the logistics of life. But you have to talk about the real things if you want a real/long-lasting relationship.''