My husband had 2 MI's in 2005, 4 stents placed, in 2009, he was diagnosed with head & neck cancer, 3 cycles of chemo and 35 sessions of raditation, in Nov, of that yr, he had bilateral neck dissection.. it was touch & go but we made it thru it. Now for the last couple days he has bee very fatigued and some pains in his chest... do I need to seek medical attention>