I was given levequin for bartonella and three weeks into treatment started amoxicillin. about 2 weeks after starting the amoxi, my arm and back began to hurt. I have had the same pain in the past before I was diagnosed so I thought it was a herx. I talked to the LLMD about it and he also thought it was a herx connected to the amoxi. It hurts in the muscle and also the elbow joint. But after a week, I had a very painful snap in the top of my arm when I tried to lift it and that scarred me so I quit the levaquin, which can cause tendonititis. The pain continued when I tried to use my arm so I also quit amoxi which was also irritating my mouth - stinging and burning. To have some kind of treatment support until the LLMD could give me something else, I started HH capsules and Samento. This morning I woke up feeling ok although my arm was stiff when I moved it. I took 20 drop of Samento (was taking 12) and the HH capsules. Within an hour, I am in pretty bad pain, not just my arm but also my wrists and lower legs. Is this a herx or what? I am not sure what to do. The doctor has not responded yet. My typical herx symptoms are muscle twitching which I have almost nothing of. I am having a hot flash at night and some urethra irritation. My sleep is great. My brain is clearer than before levequin and I still feel motivated, just worried if this is not a herx and I have tendonititis from the levaquin - how to calm it down?