<human>: This is a very awkward situation. I was staying in a new country, had met a lot of new people, had been there 3 weeks- a month ish. I have a medical condition that requires me to take blood tests regularly. I took a blood test, and the levels were highly elevated. I returned to my home country (on another continent), and fast, to get the medication checked, all things checked...I have to have a minor procedure and figure out a change in medication. 

All things said I should be back mid October. People asked me where the hell I went, because I disappeared suddenly, not wanting to deal with questions. I told them it was "family issues." I really dislike talking about medical stuff with people who might talk to other people about it. I'm private about medical things.

I had a friends with benefits there, we finished the benefits part maybe  a week before the tests. Now we are just friends, but he messaged me asking if I was ok, and to keep him updated.

Just how much of this is a good idea to say to him? Can I leave it at this:

 "It's a medical thing, I just have to have a small procedure and get some things checked. I usually tell people family issues because a lot of people get nervous when I mention "medical." 

Is that ok? Or do I just stick with the "family issues?" I feel awkward using that because you know...I can't exactly give details there. Just say "family issues, it will be fine?"

Could you distill the essence of the text into 1-3 sentences?
<bot>: I don't know how much information is too much information. If you guys were him, would you find my true answer, the medical reason, uncomfortable?