Should I tell my husband about my disease or keep it to myself?

Lately I’ve been feeling ill and my health is not as I used to. I went to my doctor and she did so many blood tests and turned out that I have inactive glands. She gave me medicines and new diet routine to follow for a month to reactive it. She said it is serious matter and advised me to urgently visit her again after 1 month to redo the tests again and make sure everything is back to normal. My husband’s been sus about my sudden life change and I still didn’t tell him because I see it’s not big deal and I don’t want worry him as he has enough pressure. Yet I still don’t know, what do you think?

Should I tell my husband about my disease or keep it to myself?
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