Hi there LadyWLyme,
Welcome to the forum! We are so glad you found us:) Im so sorry that your first post was missed. To answer your question:
Affectionately called "herx" (as in, "I'm herxing bad today"), the term is sometimes used to described the worsening of some or all symptoms that were present before treatment with the use of any antibiotic, antiparasitic, antifungal or antiviral prescribed for other parasitic (regardless of organism type) infections. Herxing can also result in new symptoms arising, very common in the treatment of Babesia, Bartonalla, Borrelia, and Ehrlichia infections.
http://www.anapsid.org/lyme/herx.htmlNot everyone has a herx and there is no time limit on when a herx starts or stops. I, myself, herxed on the third day of antibiotics and the herx lasted for two weeks. You will most likely know that you are herxing because as stated above, your symptoms will get worse. You can also have new symptoms too. Sometimes old symptoms come back. If you experience muscle pain while your not on treatment, then your muscle pain may get alot worse. You may also feel like you're getting the flu, but not everyone experiences this.
Are you currently being treated by a Lyme Literate Medical Doctor?