I have this problem everytime I get sick I keep thinking I have this disease. No matter what someone says to me or the evidence against the fact that I don't have it I still get these ruminating thoughts. It's so bad that I check my lymph nodes every five mins, I take my tempature constantly and constantly researching the subject online. I can't take it anymore its becoming out of my control and making me want to kill myself because its almost like becoming a reality to me. Its really scaring me.