Excuse for missing work?

Ro

I’m on day 4 of my self injections for <a href="https://glowing.com/glow-fertility-program">IVF</a> and I’m at the stage where I need to go in every other day or even every day for blood tests and ultrasounds. I’m a manager at my company and thus am in a very visible role. My boss knows what’s going on, but nobody else does. It’s unusual for my schedule to be so erratic, and I don’t know what to say to my team and/or other managers if they ask what’s up. I know it’s none of their business, but we are a tight knit group, so it’s not off base for them to ask. Is there anything I can use as an excuse that would reasonably cause me to miss so much work? Maybe I’m overthinking this, but I’m so stressed about it!