Get someone to look at the stitches on day 8 or 9 - if they decide it's OK to take out stitches, they will, but if not, you'll have to find a walk in centre - presumably in Netherlands? If they stay in too long, skin can "crust" over stitches, making them more difficult and uncomfortable to remove. But if they are taken out too soon, wound may burst open. If you go early, the nurse might take them out early, but apply steri-strips to hold edges together - you can peel thm off yourself, or they'll drop off eventually.
Or, if you're like me, and have taken lots of stitches out of lots of people over the decades, but not recommended if you haven't - take them out yourself on when you judge the optiumum day - was a bit interesting removing 2 stitches from my back waist band area after a mole removal, using a mirror and scapel blade. 🙂