<s>[INST] my husband thought he had a heart attack, the hospital said no. two weeks later he is still having chest pains ,shortness of breath, tired, and now is swollen and feels as though fluid is collecting in his chest. could it have been a clot? he had pain and swelling in his knee and then it left [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. It may be cardiac or respiratory in origin. It is possible that he may developed heart failure. Use tablet Pantoprazole before breakfast for one week. Avoid cool drinks and freeze water, consult your physician he will check for heart failure or Acute episode of asthma or anemia/liver/kidney failure with fluid retention. Hope I have answered your query. Let me know if I can assist you further. </s>