Anybody have an idea on why I keep heavy coughing and coughing up bloody phlegm? Trying to avoid a misdiagnosis... kind of ironic.. but any ideas?

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Thanks everyone. I went to the er and nothing viral, no blood clots or anything but I have an enlarged thyroid. I needed to have an ultrasound done anyway so that's what I'm doing.
Anybody have an idea on why I keep heavy coughing and coughing up bloody phlegm? Trying to avoid a misdiagnosis... kind of ironic.. but any ideas?
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