Ashley Graham has been asking her friends for advice on the best sex positions during pregnancy

Speaking in the January issue of Vogue magazine, she said: "I feel like every relationship goes in waves of sex. You’re like, 'Hey, do we need to plan this?'

"And now, with pregnancy, things have been real-ly diff-er-ent. Because there’s this huge bulge that can be sensitive if you lay on it or go into a new position.

"I’ve been literally asking every single one of my friends who have had babies or who’re pregnant, like, 'What positions do you guys do?' This has to be a normal conversation among mothers.

"I’m just taking in advice from everyone and not putting too much pressure on myself ... Kim [Kardashian West] immediately started telling me, 'Ashley, the pregnancy may be the hardest part, but the birth is the easiest'... Serena [Williams] was like, 'Call me; we should talk.' "

And it's not just sex she's been getting advice on as her friend Amy Schumer - who has seven-month-old son Gene with her husband Chris Fischer - invited her over to look at the nursery.

Amy explained: "I was like, 'And the nicest thing I can do for you is tell you that you won’t hear from me again, but you can call me anytime. 'Cause it’s a lot. People are so in your face when you’re pregnant because they’re so f**king excited for you. And you don’t get it. You can’t possibly get it. And then after you’ve had a baby you’re like, 'Oh, I get it!'"