I'm not a doctor nor do I pretend to be one so I can't say what you are feeling. What I can talk about
is my own personal experience with antibiotics which was they made me sick to my stomach and I couldn't handle it so I stopped it and switched over to alternative medicine.
That said not to long ago my elderly Mom had pain in her mouth so I took her to a dentist who prescribed an antibiotic for an infection he found and shame on me for giving her that medicine. She also became very sick to her stomach, dizzy and suffered headaches.
I immediately stopped giving her that medicine and ordered Dr. Jernigan's Borrelogen for her which cleared up her tooth infection. I will never ever again give my Mom an antibiotic when there are so many better options out there without the side effects.
I think people use the term "herx" too loosely. Girlie is correct that herxes occur when toxins are released from die-offs not only into the bloodstream but tissues, joints, etc. That's why it is so important to get on a detox protocol. If one does not get rid of toxins they keep recirculating causing more havoc to one's body and brain.
Hope you feel better,
12 years well ~ used Dr. Jernigan's protocol from his book about
Biological Medicine (used Borrelogen, Microbojen and Neuro-Antitox).
I still detox even though healed and drink Green Vibrance. I come back to help others for others helped me when I was sick. Pay it forward!