Viktoria
Another tip for you from a friend who recently had a pacemaker fitted. For the first 6 weeks after the operation she always wore a cardigan or jacket with pockets and kept her left hand in the pocket to remind herself not to raise the arm on that side!
And another one - when speaking on a mobile phone hold it to your right ear, so that it's not close to the pacemaker. I know that makes it difficult if you want to write something down with your right hand, but it's only for 6 weeks, isn't it?
Now, how are you carrying those cups of tea to the workmen? Why don't you summon them and let them carry their own cups?

Take lots of care.