Med Surg sucks!!! It is a specialty that i disliked about nursing the most. But you need just a few more months and you can find a speciality. Let me ask you this, when you started nursing school what did you envision your nursing career to be? I want you to do this everyday at work. Take care of your patients,do it and get it done ask for help if needed. Then Go home and think no more about it ,bathe,watch TV,hang out with friends and family.
You may have developed some anxiety and going into another career option 6 mos in is not going to help that as you may carry that same anxiety into the next career as well.