Pictures exported from Lightroom are more contrasty and more saturated

Hello,

I noticed that the pictures exported from LrC are way more saturated and contrasty that what I see while editing them (see the attached picture, especially right-bottom corner of it). 

This is a real problem for me as I always have to hit and miss in terms of those two parameters when working with a RAW picture. I always end up with something different on the output JPG file.

I did not play much with the settings after installing the product 2 weeks ago -- it is in fact default settings.

Thanks in advance for your help and advice!

Marek