Hi, As per your history symptoms are suggestive of infection which has crossed the blood-brain barrier, may be the cause is contamination of the spinal fluid. But, it can be post-procedural psychological effects too. As there are chances of psychological vulnerability to some patients who take it seriously. I would recommend you to visit your physician again, as you know there were already some doubts, so was your cerebrospinal fluid taken. You need to keep your self-hydrated properly also get a physical check-up of your site where from spinal fluid was taken. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Muzaffer Hussain Parray, Dentist