If this is happening go to the ER.
First of all, angina must be ruled out.
This is underdiagnosed in women, and when that happens, there are worse outcomes than in men.
It does not matter that you are not overweight and that it does not happen while exercising.
You need an EKG. And exam.
Lung disease can do this, but would not tend to be so intermittant.
Broncospasm: sometimes intermittant problems can be caused by acid reflux.
A very small pulmonary embolus needs to be considered, as they can act like this initially.
Anxiety attacks can do it.
In any case, some possibilities are serious and you need to be checked.
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Additional information> The brief and intermittent nature of this symptom does NOT rule out serious problems, albeit they might be early in their course. Angina must be ruled out first and foremost, and atypical symptoms are more common in women.
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