You will have to wait 13 days before you can view your IELTS result. That means that the wait is not over yet. If you feel that you did not perform well on the exam then it would be a wise decision to take the next date for the IELTS exam. If you are worried about the reading module then believe me you do not have to be worried about it because you will most probably get the same score for the writing and reading module.
There are few days left in the announcement of the IELTS exam. Your nervousness will not make your result better, so should try to relax your mind. I know that my comments are not going to soothe you and you would be irritated by my comments.