A good manager will not let a long series of absences go without trying to find out what is going on and if something can be done about
it. I wouldn't be reading anything more into it. Besides, stressing yourself is not somthing you want to be doing.
Its not your fault you have this disease and you can't go back to work while you are sick. So relax and get better and don't worry about what you can't control.
Did i say relax?