question: Hello doctor, I am a 19-year-old boy since the last six months. I am feeling physical symptoms like a tight band wrapped around my head anytime, tightness and pain in the neck, ringing ears, stuffy nose, sneezing, upset stomach, bloating, gas, back pain, eye strain, red eyes, mild headaches above eyebrows, tense muscles, sudden chills, shivering, sometimes sweating, dry mouth, nausea, weakness, constant feeling of having a big disease like a brain tumor, cancer. I had done MRI brain a few months back and the report was normal. But after I again start worrying that I have got a brain tumor after MRI. I cannot concentrate on my studies. I am anytime worrying. Please convey me that how much time is needed for a brain tumor to grow. Does it grow in a few months? I have spent a lot of money on the scan reports. Everything is normal. Please convey me.