Sorry Saul, but it is very serious. CHF is short for congestive heart failure
and in short, that means that your heart is not pumping the blood correctly - like the engine in your car misfiring. It causes you to feel up with increased fluid in your lower extremities and then lungs. You need consistent good medical treatment from a cardiologist- you will probably be on hypertensive medication
as well as a diuretic- which is a pill to eliminate fluid in your system and depending on what the cardiac tests show- at least two - 3 heart medications..... People can live long and healthy lives with CHF as long as they follow the prescribed meds and fluid limitations..... good luck to you--- please see a GOOD CARDIOLOGIST and preferably in the biggest city near you.