My goal here is not to condense seven years of medical training into a few pages. People should make medical decisions in consultation with their physicians. Let your doctor know your concerns. Ask her to explain your diagnosis in more detail and list the available treatment options. Then, go home and do some reading or log onto the Internet.
People fear the unknown.
If you understand what is going on and why you are having the tests you are having and how the treatment is supposed to help, you will feel more comfortable. You will also be better prepared to watch for any side effects or problems. Nine times out of ten, the second opinion will confirm the first . This does not mean that you have wasted your time. Peace of mind is important.