Are there people here who have lot of physical symptoms but who aren't that anxious daily?

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I went to the ER 3-4 months ago and they just letted me go with stress drugs.

I have no actual reason to believe it but I cannot prevent myself from thinking this is the sign of a serious underlying health problem.

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I'm actually in one of the less stressing period of my life. Don't have much to worry and I've been through ten time worse, so why am I experiencing so much physical symptoms. It feels completely disproportionate.

I'm just confused.