Yes, anxiety can most certainly cause physical symptoms. I have severe anxiety and I used to get so lightheaded all the time. Now I get severe stomach aches. I have also googled symptoms before and its not a good idea. I used to avoid going to the doctor but now I have found that if I don't go it increases my health anxiety. My T has helped me with ways to cope with anxiety. It is a ****** thing to deal with and people who don't have it don't get it and think you are "faking" being sick. I am sorry you struggle with it.