Im worried about my mom she is coughing up blood with mucus and she says it feels like a knot in her throat that needs to come up....she just got done with radiation because she had a mass on her leg which was cancer , they said they got it all, she also has 3 stints in her heart , she use to smoke but she quit about 2 years ago when she got her stints, she smoked ever since she was 16 and she is now 72