Last year my boyfriend and I went on our first romantic child free holiday - it was absolutely lovely - long lie ins - room service etc - and the result is I'm now pregnant with our second child 
. I lost some weight before our long weekend away so was a size 8 then - I've since developed a craving for ginger cake - grown a big belly, gone up a few bra sizes - and on our family day out last weekend asked my boyfriend to stop the car frequently- and kept explaining to our 5 year old 'mummy needs to wee' 
Our daughter's really excited about the baby and has even decided on her name if she's a girl but the pregnancy's completely unplanned - I put my growing tummy down to lots of meals out before Christmas !
I wouldn't change it though for anything - it was me and my boyfriend's first child free time away together - but I sometimes feel if he'd have known that our romantic break would lead to me ditching my size 8 jeans for elasticated waists and a beach ball sized belly, complaining I need to wee all the time and burping/indigestion after eating, , he might not have been so keen on those long mornings liieing ins on holiday! Men seem not to be as bothered about contraception until they see the actual results!
On the other hand though, I'd definitely recommend a child free holiday with your partner - felt we got to spend time together without all the usual distractions - it really was bliss !
Our family and friends are a bit surprised as they didn't think we were planning another baby and that's the thing - we weren't ! it's been a bit awkward when they've mentioned their surprise but the truth is we just enjoyed a lot of uninterrupted time in bed and I'm now happily pregnant - if a little surprised 😊