Telling work can be tricky. When I started at 9am it was pretty rare that I was late from IVF and even then I could blame it on a client meeting with the role I had. Then I got a job with an 8am start which was impossible to make. I told them when we had a cycle coming up that I had to have blood tests for a condition from time to time. Then some "minor surgery" for EPU. I'm lucky now that I have an amazing boss who is with me every step of the way, I can tell her when I have anything I need time off for. She cried when I told her I was pregnant (in a good way), was supportive when I was put on bed rest and was also devastated when I lost bubs. I know, I'm super lucky. It is nice though, after all these years of long hours and extra effort that I am finally getting something back out of work in terms of give and take. Don't get me wrong, I'm still carrying my load. When you tell them you're doing IVF though, you have to be aware that it might come with unintentional (or intentional) career discrimination. I've had enough areas of my life on hold and given up so much to this process that I am unwilling to give this information to someone who may use it against me. Unless you are 100% certain as to how the info will be used, I'd recommend just using a generalist medical excuse (ongoing monitoring of a condition) and surgery.