Good luck to you! Last summer, I was in the process of changing jobs and a few weeks before I was supposed to report to the new job, I got a diagnosis that required immediate surgery. It's pretty daunting having to call a new boss and tell him you'll be reporting late, but everything worked out nicely and he was rather impressed at how quickly I was able to get to work. It turned out to be a positive start to the job. I hope yours turns out well, too.