Good news
After a longer time than what's usual, my doctor and I finally got the results of the samples they took during my surgery. I don't need any more cancer treatment. The lymph nodes they collected from my belly were fine. They're still going to do more tests since the first sample they had showed a trace of something, but my doctor thought it was unlikely to be something serious. So checkups every three months in the beginning, and it'll take five years until I get the lable 'cured'. But no cancer treatment was needed. So, yay!