<s>[INST] I had a heart cath a week ago tomorrow there s a knot n swelling at the incision site i have had serious shortness in breath for several days also had a lump come up on the opposite leg sore n tender as well is this normal or do i need to go to the hospital [/INST] Hi, Swelling may be due to hematoma at the site of cathetor insertion or it may be infection. Breathlessness may be due to contrast allergy or heart pumping insufficiency, etc. Until examination is done it is difficult to say what it is. Please consult your physician/cardiologist he will examine and treat you accordingly. Hope I have answered your query. Let me know if I can assist you further. </s>