One option, if you have the means and can collect the mail from your parents' house, is to go ahead and pay their bills yourself -- it's not illegal to pay someone else's bills.
Pulmonary embolism occurs when a clump of material, most often a blood clot, gets wedged into an artery in your lungs. These blood clots most commonly come from the deep veins of your legs. This condition is known as deep vein thrombosis (DVT). In most cases, multiple clots are involved but not necessarily all at once.
Educating yourself about lung cancer: Signs and symptoms: Blood clot-lung. Pulmonary embolus. A pulmonary embolus is a blockage of an artery in the lungs by fat, air, blood clot, or tumor cells. Venous thrombo-embolism; Lung blood clot; Blood clot-lung; Embolus; Tumor embolus. Causes. Pulmonary emboli are most often caused by blood clots in the veins, especially veins in the legs or in the pelvis (hips).