Given the prior history of a stent, and significant symptoms, a visit to ER is possibly mandated. The symptoms do not fit with any obvious disease, and if the symptoms are stable/ reducing then waiting for a day maybe alright too. In the meantime avoiding exertion would be a good idea. Any worsening should definitely be taken seriously, as would any signs of heart involvement like chest pain, tightness along chest, left arm pain etc.
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regards
Dr. Gupta

